Step by Step solution about How to resolve the algorithm String concatenation step by step in the C++ programming language

The provided C++ code demonstrates string concatenation.

• std::string s = "hello";: Declares a string s and initializes it with the value "hello" using a string literal.

• std::cout << s << " literal" << std::endl;: Uses std::cout for printing the string s. The << operator is used for string concatenation. Here, " literal" is appended to the string s.

• std::string s2 = s + " literal";: Declares another string s2 and initializes it by concatenating the string s with the " literal" using the + operator. This results in the string "hello literal" being stored in s2.

• std::cout << s2 << std::endl;: Finally, the string s2 is printed using std::cout.

The output of the code will be:

hello literal
hello literal

#include <string>
#include <iostream>

int main() {
   std::string s = "hello";
   std::cout << s << " literal" << std::endl;
   std::string s2 = s + " literal";
   std::cout << s2 << std::endl;
   return 0;
}