Ass. Sarmad Exams

#include<iostream>
using namespace std;
int main()
{
    //Answer quastion 1 for B array (2D)
    int a[6][4],i,j,k=1;
    for(i=0;i<6;i++)
    {
        for(j=0;j<4;j++)
        {
            a[i][j]=k;
            k++;
        }
        k--;

    }
    //Answer quastion 2 for B array (2D)
    for(i=0;i<6;i++)
    {
        for(j=0;j<4;j++)
        {
            cout<<a[i][j]<<"\t";
        }
        cout<<endl;
    }
    cout<<"************************************************\n";
    //Answer quastion 1 for A array (1D)
    int b[7],p=35;
    for(i=0;i<7;i++)
    {
        b[i]=p;
        p-=5;
    }
    //Answer quastion 2 for A array (1D)
    for(i=0;i<7;i++)
    {
        cout<<b[i]<<"\t";
    }
    cout<<"\n************************************************\n";
    //Answer quastion 3 Swap array A with last colomn
    for(i=0;i<6;i++)
    {
        int temp=a[i][3];
        a[i][3]=b[i];
        b[i]=temp;
    }
    for(i=0;i<6;i++)
    {
        for(j=0;j<4;j++)
        {
            cout<<a[i][j]<<"\t";
        }
        cout<<endl;
    }
    cout<<"\n************************************************\n";
    for(i=0;i<7;i++)
    {
        cout<<b[i]<<"\t";
    }
    cout<<"\n************************************************\n";
    //Answer quastion 4 find the Avarage for second row
    int sum=0,x=0;
    for(j=0;j<4;j++)
    {
        if(a[1][j]%2==1)
        {
            sum+=a[1][j];
            x++;
        }
    }
    float av=sum/x;
    cout<<"Avarage = "<<av;
}