create a string of length c 2b 2b

1// string::length
2#include <iostream>
3#include <string>
4
5int main ()
6{
7  std::string str ("Test string");
8  std::cout << "The size of str is " << str.length() << " bytes.\n";
9  return 0;
10}

1#include <string>
2#include <iostream>
3
4int main()
5{
6    std::string s(21, '*');
7
8    std::cout << s << std::endl;
9
10    return 0;
11}
12