Small brainteaser. Do you know that function below doesn't work in some cases.
Try to attack it.
#include <iostream>
using namespace std;
void swap(int &a, int &b){
a = a + b;
b = a - b;
a = a - b;
}
C++: Swap function
Small brainteaser. Do you know that function below doesn't work in some cases.
Try to attack it.
#include <iostream>
using namespace std;
void swap(int &a, int &b){
a = a + b;
b = a - b;
a = a - b;
}