multiplication in file

 #include<stdio.h>

int main(){

    FILE *ptr;

    int num;

    printf("Enter the integer you need the table of\n");

    scanf("%d", &num);

    ptr = fopen("table.txt", "w");

    for(int i=0; i<10; i++){

        fprintf(ptr, "%d X %d = %d\n", num, i+1, num*(i+1));

    }

    fclose(ptr);

    printf("Successfully generated table of %d to table.txt\n", num);

    return 0;

}