functions

#include<iostream>
using namespace std;
int add(int num1, int num2){
    int sum = num1 + num2;
    return sum;
}
int main(){
    int a, b;
    cout<<"Enter a :";
    cin>>a;
    cout<<"Enter b :";
    cin>>b;
    cout<<add(a,b)<<endl;
    return 0;
}