Solution for Day 2
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39
02/.vimspector.json
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39
02/.vimspector.json
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{
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"configurations": {
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"Launch": {
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"adapter": "vscode-cpptools",
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"filetypes": [ "cpp", "c", "objc", "rust" ], // optional
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"configuration": {
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"request": "launch",
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"program": "${workspaceRoot}/output/main",
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"args": [ "${workspaceRoot}/tests/guide.dat", "2" ],
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"cwd": "${workspaceRoot}/output",
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//"environment": [ ... ],
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"externalConsole": true,
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"MIMode": "gdb"
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}
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},
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"Attach": {
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"adapter": "vscode-cpptools",
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"filetypes": [ "cpp", "c", "objc", "rust" ], // optional
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"configuration": {
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"request": "attach",
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"program": "${workspaceRoot}/output/main",
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"MIMode": "gdb"
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}
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},
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"Launch prod": {
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"adapter": "vscode-cpptools",
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"filetypes": [ "cpp", "c", "objc", "rust" ], // optional
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"configuration": {
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"request": "launch",
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"program": "${workspaceRoot}/output/main",
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"args": [ "guide.dat", "2" ],
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"cwd": "${workspaceRoot}/output",
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//"environment": [ ... ],
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"externalConsole": true,
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"MIMode": "gdb"
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}
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}
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}
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}
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91
02/Makefile
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91
02/Makefile
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#
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# 'make' build executable file 'main'
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# 'make clean' removes all .o and executable files
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#
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# define the C compiler to use CC = gcc
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# define any compile-time flags
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# CFLAGS := -std=c99 -Wall -Wextra -g -lm
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CFLAGS := -std=c99 -Wall -Wextra -g
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# define library paths in addition to /usr/lib
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# if I wanted to include libraries not in /usr/lib I'd specify
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# their path using -Lpath, something like:
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LFLAGS =
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# define output directory
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OUTPUT := output
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# define source directory
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SRC := src
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# define include directory
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INCLUDE := include
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# define lib directory
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LIB := lib
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ifeq ($(OS),Windows_NT)
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MAIN := main.exe
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SOURCEDIRS := $(SRC)
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INCLUDEDIRS := $(INCLUDE)
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LIBDIRS := $(LIB)
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FIXPATH = $(subst /,\,$1)
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RM := del /q /f
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MD := mkdir
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else
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MAIN := main
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SOURCEDIRS := $(shell find $(SRC) -type d)
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INCLUDEDIRS := $(shell find $(INCLUDE) -type d)
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LIBDIRS := $(shell find $(LIB) -type d)
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FIXPATH = $1
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RM = rm -f
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MD := mkdir -p
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endif
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# define any directories containing header files other than /usr/include
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INCLUDES := $(patsubst %,-I%, $(INCLUDEDIRS:%/=%))
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# define the C libs
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LIBS := $(patsubst %,-L%, $(LIBDIRS:%/=%))
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# define the C source files
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SOURCES := $(wildcard $(patsubst %,%/*.c, $(SOURCEDIRS)))
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# define the C object files
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OBJECTS := $(SOURCES:.c=.o)
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#
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# The following part of the makefile is generic; it can be used to
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# build any executable just by changing the definitions above and by
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# deleting dependencies appended to the file from 'make depend'
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#
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OUTPUTMAIN := $(call FIXPATH,$(OUTPUT)/$(MAIN))
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all: $(OUTPUT) $(MAIN)
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@echo Executing 'all' complete!
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$(OUTPUT):
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$(MD) $(OUTPUT)
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$(MAIN): $(OBJECTS)
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$(CC) $(INCLUDES) $(OBJECTS) $(LFLAGS) $(LIBS) -o $(OUTPUTMAIN) $(CFLAGS)
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# this is a suffix replacement rule for building .o's from .c's
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# it uses automatic variables $<: the name of the prerequisite of
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# the rule(a .c file) and $@: the name of the target of the rule (a .o file)
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# (see the gnu make manual section about automatic variables)
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.c.o:
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$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
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.PHONY: clean
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clean:
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$(RM) $(OUTPUTMAIN)
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$(RM) $(call FIXPATH,$(OBJECTS))
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@echo Cleanup complete!
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run: all
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./$(OUTPUTMAIN)
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@echo Executing 'run: all' complete!
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268
02/src/main.c
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268
02/src/main.c
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#include <stdio.h>
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#include <stdlib.h>
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/* Error codes:
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* 0 - no error
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* 1 - invalid number of arguments
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* 2 - invalid file
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* 3 - invalid file format
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* 4 - invalid solution part
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*/
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/* NOTE: info to remember:
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* The aliases for rock, paper, scissors are:
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* - A = X = rock
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* - B = Y = paper
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* - C = Z = scissors
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* ------------------------------------------
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* Scores:
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* - Shape
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* - Rock: 1
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* - Paper: 2
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* - Scissors: 3
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* - Outcome
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* - Win: 6
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* - Draw: 3
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* - Loss: 0
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*/
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int arg_parser(int argc, char *argv[], char **file_name, int *solution_part) {
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if (argc != 3) {
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printf("Usage: %s <file> <solution_part (1/2)>\n", argv[0]);
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return 1;
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}
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// Check if the file exists
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FILE *file = fopen(argv[1], "r");
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if (file == NULL) {
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printf("Error: File does not exist.\n");
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return 2;
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}
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// Check if the solution part is a valid number
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if (atoi(argv[2]) != 1 && atoi(argv[2]) != 2) {
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printf("Error: Invalid solution part.\nValid values are [1, 2]\n");
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return 4;
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}
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*file_name = argv[1];
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*solution_part = atoi(argv[2]);
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return 0;
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}
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// Returns the score of the given shape
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// 1 = rock, 2 = paper, 3 = scissors
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int score_shapes(char shape) {
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switch (shape) {
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case 'A':
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case 'X':
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return 1;
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case 'B':
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case 'Y':
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return 2;
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case 'C':
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case 'Z':
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return 3;
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default:
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return -1;
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}
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}
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/* Returns my score for the round
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*
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* Parameters:
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* - opponents_shape
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* - A = rock
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* - B = paper
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* - C = scissors
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* - my_shape
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* - X = rock
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* - Y = paper
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* - Z = scissors
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*/
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int round_score(char opponents_shape, char my_shape) {
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// Checks if the shapes are valid and get their scores
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int opponents_score = score_shapes(opponents_shape);
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int shape_score = score_shapes(my_shape);
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if (opponents_score == -1 || shape_score == -1) {
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printf("Error: Invalid shape.\n");
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return -1;
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}
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// Draw
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if (opponents_shape == 'A' && my_shape == 'X') {
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return 3 + shape_score;
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} else if (opponents_shape == 'B' && my_shape == 'Y') {
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return 3 + shape_score;
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} else if (opponents_shape == 'C' && my_shape == 'Z') {
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return 3 + shape_score;
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}
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// Rock win
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else if (my_shape == 'X' && opponents_shape == 'C') {
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return 6 + shape_score;
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}
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// Paper win
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else if (my_shape == 'Y' && opponents_shape == 'A') {
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return 6 + shape_score;
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} // Scissors win
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else if (my_shape == 'Z' && opponents_shape == 'B') {
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return 6 + shape_score;
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} else {
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return shape_score;
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}
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}
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int score_file(char **file_name) {
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FILE *file = fopen(*file_name, "r");
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if (file == NULL) {
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printf("Error opening the file.\n");
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return -2;
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}
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int my_score = 0;
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// Read the file
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while (!feof(file)) {
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char opponent[1];
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char me[1];
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int res = fscanf(file, "%s %s", opponent, me);
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if (res == EOF) {
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break;
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}
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// Check for blank line at the end of the file
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else if (res == 1 && opponent[0] == '\n') {
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continue;
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} else if (res != 2) {
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printf("Error: Bad file format.\n");
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return -3;
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}
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my_score += round_score(*opponent, *me);
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}
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return my_score;
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}
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/* NOTE:
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* ------------------------------------------------------------
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* PART 2 OF THE SOLUTION
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* ------------------------------------------------------------
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*/
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char *get_win_shape_part2(char *opponents_shape) {
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switch (*opponents_shape) {
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case 'A':
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return "B";
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case 'B':
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return "C";
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case 'C':
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return "A";
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default:
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return "0";
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}
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}
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// Returns the shape that looses against the given shape
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//
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// Parameters:
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// - opponents_shape
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// - A = rock
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// - B = paper
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// - C = scissors
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char *get_loss_shape_part2(char *opponents_shape) {
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switch (*opponents_shape) {
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case 'A':
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return "C";
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case 'B':
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return "A";
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case 'C':
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return "B";
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default:
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return "0";
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}
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}
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/* Returns the score for a given round
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*
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* Parameters:
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* - opponents_shape
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* - A = rock
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* - B = paper
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* - C = scissors
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* - round_result
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* - X = loss
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* - Y = draw
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* - Z = win
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*/
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int score_round_part_2(char *opponents_shape, char *round_result) {
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if (*round_result == 'X') {
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char *loss_shape = get_loss_shape_part2(opponents_shape);
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return score_shapes(*loss_shape);
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} else if (*round_result == 'Y') {
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// I have the same shape as the opponent
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return 3 + score_shapes(*opponents_shape);
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} else if (*round_result == 'Z') {
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char *win_shape = get_win_shape_part2(opponents_shape);
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return 6 + score_shapes(*win_shape);
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} else {
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return -1;
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}
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}
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// score_part2
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int score_file_part2(char **file_name, int *score) {
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FILE *file = fopen(*file_name, "r");
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if (file == NULL) {
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printf("Error opening the file.\n");
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return 2;
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}
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// int score = 0;
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// Read the file
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while (!feof(file)) {
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char opponent;
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char round_res;
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int res = fscanf(file, "%s %s", &opponent, &round_res);
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if (res == EOF) {
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break;
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}
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// Check for blank line at the end of the file
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else if (res == 1 && opponent == '\n') {
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continue;
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} else if (res != 2) {
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printf("Error: Bad file format.\n");
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return 3;
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}
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*score += score_round_part_2(&opponent, &round_res);
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}
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// return score;
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return 0;
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}
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int main(int argc, char *argv[]) {
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char *file_name;
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int solution_part;
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int score = 0;
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int res = arg_parser(argc, argv, &file_name, &solution_part);
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if (res != 0) {
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return res;
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}
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if (solution_part == 1) {
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printf("My score: %d\n", score_file(&file_name));
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} else {
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int res = score_file_part2(&file_name, &score);
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if (res != 0) {
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return res;
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}
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printf("My score: %d\n", score);
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}
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return 0;
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}
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4
02/tests/guide.dat
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4
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A Y
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B X
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C Z
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