C/string.h/strrchr
strrchr: returns a pointer to the last occurrence of ch in *str
//Declaration: char *strrchr(const char *str, int ch);
//Return: returns a pointer to the last occurrence of ch in *str.
#include <string.h>
#include <stdio.h>
int main(void){
char *p;
p = strrchr("this is a test", "i");
printf(p);
return 0;
}
/*
is a test*/