Functia strrchr !

#include <iostream>
#include<string.h>
using namespace std;
int main()
{
 char s1[100],s2[100];
cout<<"tasteaza o fraza: ";
cin.get(s1,100);
cin.get();
cout<<strrchr(s1,'U')-s1; //returneaza nr octetului unde se afla caracterul ‘ u’
 return 0;
}