difference between return and cout

Question

what is the difference between return and cout
return a+b;
cout<<a+b;

Answer 1

Cout is equivalent to printing something out. Return is for functions, and is the result of whatever the function does. So, you could do something like this:

int sum(n1, n2) {
return n1 + n2;
}

cout << sum(5, 8) << endl;
cout << 5 + 8 << endl;

// Both couts do the same thing