#include <iostream>
 using namespace std;
 #include <cstring>
 #define MAX 11
 const char* truncate(char* s, int n); 

 int main( ) {
     char str[] = "This is OOP244";

     cout << "Before: " << str << endl;
     strcpy(truncate(str, MAX), str); /* ERROR */
     cout << "After:  " << truncate(str, MAX) << endl; 

     cout << "str array's contents are now:" << str << endl;

     return 0;
 }

 // truncate contents of s[] at s[n-1]
 //
 const char* truncate(char* s, int n) {  // prevents functions from returning a value
                                         // Better a compile error than a program problem later on ...
     if (strlen(s) > n)
         s[n] = '\0';

     return s;
 }