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

double ant(char c, int i) {
    printf("in ant\n");
    return 1.0 * i / c;
}
double bat(char see, int eye) {
    printf("in bat\n");
    return 1.0 * eye * see;
}
void call_fn(double (*animal_arg)(char, int), char ceee, int eiiii) {
    animal_arg(ceee, eiiii);
}
int main(int argc, char* argv[]) {
    
    // DECLARE A FUNCTION ADDRESS VARIABLE THAT YOU CAN ASSIGN
    // ant(…) or bat(…).
    double (*animal_fn)(char, int) = ant;
    animal_fn('A', 13);

    animal_fn = bat;
    animal_fn('A', 13);

    animal_fn = NULL;

    call_fn(ant, 'Z', 99);

    return EXIT_SUCCESS;
}
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