C++

4.2    A Detailed Walkthrough

Having looked at an example program from start to finish in the previous section, I will now go into a little more detail. You will see the first formal definitions and learn to recognize the important language elements.

Let's build Listing 4.1 a little and let's take a closer look at the elements we already know.

// https://godbolt.org/z/ceT6o5zxd#include <iostream>    // for std::cin, std::cout, std::endl#include <string>      // std::stoivoid calculate(int n) {                           // a separate function    using namespace std;                          // for std::cout and std::endl     /* output divisors */    cout << "divisors of " << n << " are:\n";    if(n == 0) { cout << "0\n"; return; }         // 0 is divisor of 0    for(int divider=1; divider <= n; ++divider) { // for divider=divider+1 ...