Passing functions in C with function return type casting

test.c

#include <stdio.h>

int a(){
    return 42;
}

double b(){
    return 3.141592653589793;
}

char c(){
    return '*';
}

int main(int argc, char **argv){
    void* (*someFunc)();

    someFunc = (void*(*)())&a;
    printf("The result of a: %d\n", (int)((int(*)())someFunc)());

    someFunc = (void*(*)())&b;
    printf("The result of b: %f\n", (double)((double(*)())someFunc)());

    someFunc = (void*(*)())&c;
    printf("The result of c: %c\n", (char)((char(*)())someFunc)());
    printf("The result of c: %d\n", (int)((int(*)())someFunc)());

    return 0;
}