program helper page of c++.

Hey steemians.

I brought you the program helper post.

#include <iostream>

using namespace std;

void alpha();

//Global variable

int a;

int main(){

//local variable in main function

    a=10;

cout<<a<<endl;

cout<<"pond!"<<endl;

alpha();

}

void alpha(){

//local variable in user defined function

a=90;

cout<<a<<endl;

{

//block variable

    a=28;

    cout<<a<<endl;

}

}