#include <stdio.h>
#include <string.h>
int main(void)
{
char s[] = "Unreal Engine 4";
char *p;
p = strchr(s, 'n');
while (p != NULL)
{
printf("found 'n' in index: %d\n", (int)(p - s));
p = strchr(p + 1, 'n');
}
return 0;
}
/*
run:
found 'n' in index: 1
found 'n' in index: 8
found 'n' in index: 11
*/