experimenting with function pointers, what a mess...

function-pointers.c

#include <stdio.h>

void printnnl(char *);
void printnl(char *);
void printgeneric(void (*printfunc)(char *), char *str);

void printgeneric(void (*printfunc)(char *), char *str)
{
    (*printfunc)(str);
}
void printnnl(char *str)
{
    printf("%s", str);
}
void printnl(char *str)
{
    printf("%s\n",str);
}
int main()
{
    printgeneric(printnnl, "hi");
    printgeneric(printnl,  " world");
    return 0;
}