/*
 * Exercise 4-1. Write the function strindex(s,t) which returns the position of
 * the rightmost occurrence of t in s, or -1 if there is none
 */

#include <stdio.h>
#include <string.h>
int strindex(char s[], char t) {
  for (int i = 0; i < strlen(s); i++) {
    if (s[i] == t) {
      return i;
    }
  }
  return -1;
}

int main() {
  int index = strindex("Hello world", 'w');
  printf("Index: %d\n", index);
}