Write a program to compare two strings. Now write a program to compare the values of two C-style character strings

#include <string>
#include <iostream>

int main() {
  std::string s1, s2;
  std::cin >> s1 >> s2;
  if (s1 == s2)
    std::cout << "Two strings are equal." << std::endl;
  else
    std::cout << "Two strings are not equal." << std::endl;

  char cs1[100];
  char cs2[100];
  std::cin >> cs1 >> cs2;
  if (!strcmp(cs1, cs2))
    std::cout << "Two C-style strings are equal." << std::endl;
  else
    std::cout << "Two C-style strings are not equal." << std::endl;

  return 0;
}