Using loop plss in c++

Question

Design a program that will output the following: December 4
a.  jjjjj
jjjj
jjj
jj
j
b. 0123456789
012345678
:
0

Answer 1

A)

#include <iostream>

#include <cstdlib>

using namespace std;

int main()
{
    int ch;
    int a, b;
    float res;
    cout<<"Enter two numbers : ";
    cin>>a>>b;
    cout<<"\nEnter operation you want to perform : "<<endl;
    cout<<"\t1. Addition..."<<endl;
    cout<<"\t2. Subtraction..."<<endl;
    cout<<"\t3. Multiplication..."<<endl;
    cout<<"\t4. Division..."<<endl;
    cout<<"\t5. Exit..."<<endl;
    cout<<"Enter your choice!!!"<<endl;
    cin>>ch;
    switch(ch)
    {
        case 1: res = a+b;
                break;
        case 2: res = a-b;
                break;
        case 3: res = a*b;
                break;
        case 4: res = (float)a/b;
                break;
        case 5: cout<<"Thanks for stopping by!!!";
                exit(0);
    }
    cout<<"\n\nResult is :"<<res<<" !!!"<<endl;
    return 0;
}

B)

#include <iostream>

#include <cstdlib>

using namespace std;

int main()
{
    int i, j;
    for(i=9;i>=0;i--)
    {
        for(j=0;j<=i;j++)
        {
            cout<<j;
        }
        cout<<endl;
    }
    return 0;
}

Cheers