//* data conversion into char arrays using sprintf *
#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;

int main() {
    char buffer[80];

    int     val1;
    double  val2;
    cin >> val1 >> val2;

    sprintf(buffer, "int= %d, double= %lf\n", val1, val2);
    //      ^^ char array buffer to write to (do not write more than the buffer length!)
    //               ^^ text - print it 
    //                    ^^ %magic instructs what variables to insert in-between the text
    //                    ^^ %magic - each corresponds to one variable to read
    //                          %d for decimal int
    //                          %lf for double
    //                                         ^^ variables passed by value
    // Warning: messing up the vaiable numebrs and/or their types might result in a program crashing

    cout << buffer;

    return(0);
}

void extract(const char* data, int &num1, double &num2, bool &ok) {
    ok=false;
    int bytesread = sscanf(data, "+OK %d %lf", &num1, &num2);
    if (bytesread>0) ok=true; // checl if reading actually took place
}