如何将字符串写入C中的文件？

FILE *file = fopen("file.txt", "w");

char *str = "Hello, World!";
fputs(str, file);

char *str = "Hello, World!";
fprintf(file, "%s", str);

fclose(file);

#include <stdio.h>

int main() {
    FILE *file = fopen("file.txt", "w");
    if (file == NULL) {
        printf("Failed to open file.\n");
        return 1;
    }

    char *str = "Hello, World!";
    fputs(str, file);

    fclose(file);

    return 0;
}