CPP to C programming language

Question

Change this code to c programming:

#include <iostream>
using namespace std;

int main() {

int a;
int b;
cout<<"first number: ";
cin>>a;
cout<<a<<endl;
cout<<"second number: ";
cin>>b;
cout<<b<<endl<<endl;

int sum=a+b;
int minus=a-b;
int multiply=a*b;
int divide=a/b;
int module =a%b;

cout<<a<<"+"<<b<<"="<<sum<<endl;
cout<<a<<"-"<<b<<"="<<minus<<endl;
cout<<a<<"*"<<b<<"="<<multiply<<endl;
cout<<a<<"/"<<b<<"="<<divide<<endl;
cout <<a<<"%"<<b<<"="<<module<<endl;
return 0;
}

Answer 1

Is that a question?

Just use the <stdio.h> header instead of <iostream>, remove the namespace import, and replace std::cout with printf() and std::cin with scanf() or other respective input/ output methods.
If you know some C++, translating this to C should be fairly simple.

And if you need a reference:

https://en.cppreference.com/w/c/io