#include <string>
 #include <iostream>

 int main()
 {
 char a[20] = "abc";
 a[4] = 50;

 std::string str1;
 str1.assign(a, a +20);

 for(char ch : str1)
 {
 	std::cout << std::hex << (int) ch << " " ;
 }
 std::cout << std::endl;
return 0;
 }