#include <iostream>
#include <stdio.h>  // for fprintf

using namespace std;

int main() {
     cout << "This is to cout" << endl;
     cerr << "This is to cerr " << endl;

     printf("This is from printf\n");
     fprintf(stdout,"This is from fprintf stdout\n");
     fprintf(stderr, "This is from fprintf stderr\n");

     return 0;
}