The document contains C++ code that takes in two numbers from the user, asks the user to select an arithmetic operation, performs the calculation on the two numbers based on the user's selection, and displays the result. The program uses switch statements to perform addition, subtraction, multiplication, division, or modulus based on the user's input and displays the output.

1. oops
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c,ch;
clrscr();
cout<<"Enter first element";
cin>>a;
cout<<"Enter second number";
cin>>b;
cout<<"nPress 1 for addition";
cout<<"nPress 2 for subtraction";
cout<<"nPress 3 for multiplication";
cout<<"nPress 4 for division";
cout<<"nPress 5 for modulus";
cout<<"n Enter your choice:";
cin>>ch;
switch(ch)
{
case 1:
c=a+b;
cout<<"Sum is="<<c<<endl;
break;
case 2:
c=a-b;
cout<<"Substraction is="<<c<<endl;
break;
case 3:
c=a*b;
cout<<"Multiplication is="<<c<<endl;
break;
case 4:
c=a/b;
cout<<"Division is="<<c<<endl;
break;
case 5:
c=a%b;
cout<<"Modulus is="<<c<<endl;
break;
default:
cout<<"n Invalid choice";
}
getch();
}