Syntax with parameters in c++

 #include <iostream>

using namespace std;

int sum(int a, int b) {  // a, b are parameters

    int sum = a + b;

    return sum;

}

int main() {

    int s = sum(2, 4); // 2, 4 are arguments

    cout << "sum = " << s << endl;

    return 0;

}