4.5.1 Why bother with functions?

TRY THIS

Implement square() without using the multiplication operator; that is, do the x*x by repeated addition(start a variable result at 0 and add x to it x times). Then run some version of "the first program" using that square().

 

#include "std_lib_facilities.h"int square(int x){int result = 0;for(int loop = 0; loop < x; ++loop)result += x;return result;}int main(){int xx = 0;cin >> xx;cout << square(xx);}

 

#include "std_lib_facilities.h"int square(int);int main(){int xx = 0;cin >> xx;cout << square(xx);}int square(int x){int result = 0;for(int loop = 0; loop < x; ++loop)result += x;return result;}