Source of scope6.cpp

Structures and functions

  1: //scope6.cpp
  2: //A nonsense program to test your understanding
  3: //of variable scope and lifetime.

  5: #include <iostream>
  6: using namespace std;

  8: int j = 3; //Global variable

 10: void DoThis(int& i, int j)
 11: {
 12:     i = 3 * j;
 13:     j = 4 * i;
 14:     cout << i << " " << j << endl;
 15: }

 17: int i = 2; //Global variable

 19: void DoThat(int& i)
 20: {
 21:     j = 2 * i;
 22:     i = j % 3;
 23:     cout << i << " " << j << endl;
 24: }

 26: int main()
 27: {
 28:     cout << endl;
 29:     cin >> i >> j;
 30:     DoThat(i);
 31:     DoThis(j,i);
 32:     cout << i << " " << j << endl;
 33: }