selection sort

#include <cstdlib>
#include <iostream>

using namespace std;

void swap(int &a,int &b)
{
     int temp;
     temp = b;
     b = a;
     a = temp;
}

int main()
{
    int flag=0;
    int array[]={7,1,5,9,2};

    for (int i=0;i<5;i++){
        flag = i;
        for (int j=i+1;j<5;j++){
            if (array[flag] > array[j]){
                flag = j;
            }
        }
    swap(array[flag],array[i]);
    cout<<array[i]<<" ";
    }
    cout<<endl;
    system("PAUSE");
}