How to use bubble sort

[jacksparrow]

Our doctor wrote the function ,, and i wanted to use it , i did find the mistake like > greater then and the declaration

# include <iostream>
using namespace std;
void bubblesort ( int array[] , int length );
int main () {

    int array [10]={10,20,30,40,50};
    for ( int i=0; i<10; i++)
    cout <<bubblesort(array,10);

    return 0;

}

void bubblesort ( int array[], int length ) {
    int step , index , temp;

    for ( step =1; step<length; step++) 
    {
        for ( index=0; index<length-step; index++)
            if ( array [index] > array [ index+1 ])
            {
                temp = array [ index];
                array [index] = array [index+1];
                array [index+1] = temp;
            }
    }
}