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Help with bubble sort

EternalTactician (52)
My bubble sort shows up as all 0's

This is the first algorithm i am doing. My teacher explained the algorithm in the class but i don't understand him very well because english is not my first language.

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#include <iostream>
using namespace std;

const int N=10;

void input(double &s, int arynum[]){
    s=0;
    for (int i = 0; i<N; i++){
    cout<<"grade"<<i+1<<" ";
    cin>>arynum[i];
    s= s+arynum[i];
    }


}


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


void sort(int arynum[]){

    for (int a=0; a>N; a++){

        for (int b=0; b<N; b++){

        if (arynum [a]>arynum[b]){
            swap (arynum[a], arynum[b]);

}

}

}


}

double calc (double sum, int arynum[]){
    double mean=sum/N;

}




void output(double sum, int arynum[]){

cout<<"your mean is: "<< sum/N;


for ( int a = 0; a < N; a++ ){
cout<<" " << arynum[N];
}



}



int main(){

    int numbers[N];
    double mean;
    double median;
    double n;
    double s;
    input(s, numbers);
    sort(numbers);
    output(s, numbers);




}

Peter87 (11234)
You get a bunch of zeroes because you are using N instead of a as index on line 58.

If you change > to < on line 28 the sorting will work.
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