Functions

1. include <stdio.h>

void cfile(char *file) {

    FILE *fp = fopen(file, "w");
    fprintf(fp, "example");
    fclose(fp);

}

int add(int x, int y) {

    int r;
    r = x + y;
    return(r);

}

int main() {

    cfile("example.txt");
    add(1,1);
    return 0;

}