Class Practice 1a
-------------------------------------------------------
#include <iostream>
using namespace std;

int main(){

        int i;

        for(i=10;i<=50;i+=10)
                cout << i << " ";
        cout << endl;

        return 0;
}


=======================================================

Class Practice 1b
-------------------------------------------------------
#include <iostream>
using namespace std;

int main(){

        int i;

        for(i=1;i<=10;i++)
                cout << i*i << " ";
        cout << endl;


        return 0;
}


=======================================================

Class Practice 1c
-------------------------------------------------------
#include <iostream>
using namespace std;


int main(){

        int i;

        for(i=19;i>0;i-=2)
                cout << i << " ";

        cout << endl;

        return 0;
}


=======================================================

Class Practice 2a
-------------------------------------------------------
#include <iostream>
using namespace std;

int main(){

        int i, j, n;

        cout << "Enter n=";
        cin >> n;

        for(i=0;i<n;i++){
                for(j=0;j<n;j++)
                        cout << i*i << "\t";
                cout << endl;
        }

        return 0;
}


=======================================================

Class Practice 2b
-------------------------------------------------------
#include <iostream>
using namespace std;

int main(){

        int i, j, n;

        cout << "Enter n=";
        cin >> n;

        for(i=n;i>=0;i--){
                for(j=0;j<=i;j++)
                        cout << i << "\t";
                cout << endl;
        }

        return 0;
}

=======================================================