#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_NAME 64
#define GREETING "Hello, World!"

typedef struct {
    int id;
    char name[MAX_NAME];
    double score;
} Player;

int add(int a, int b) {
    return a + b;
}

void greet(const char *name) {
    printf("%s, %s!\n", GREETING, name);
}

int main(void) {
    Player p = {1, "Alice", 95.5};
    greet(p.name);

    int result = add(3, 4);
    printf("3 + 4 = %d\n", result);

    FILE *fp = fopen("test.txt", "w");
    if (fp) {
        fprintf(fp, "id=%d,name=%s,score=%.1f\n", p.id, p.name, p.score);
        fclose(fp);
    }

    return 0;
}