### Else if ladder to perform operation on two numbers based on operator in C++ language

Introduction:  In previous article i explained  Else if ladder or multiple else if to check the day corresponding to number in C++ Language and Else if ladder or multiple else if to check the month corresponding to number in C++ Language. In this article i  am going to explain how to perform addition(+), subtraction(-), multiplication(*), division(/) and modulus (%) operations on two numbers corresponding to selected operator from + , - , * , / ,%  using ladder else if or we can say multiple else if statement in C++ Language.Modulus operator(%) gives the remainder after integer division e.g divide 10 by 4 and you will get 2 as remainder Let's understand by creating a program.

#include<conio.h>
#include<iostream.h>
main()
{
int a,b,c;
char op;
cout<<"Enter first number : ";
cin>>a;
cout<<"Enter second number : ";
cin>>b;
cout<<"Enter any  operator from + , - , * , / ,% : ";
cin>>op;
if(op=='+')
{
c=a+b;
cout<<"Sum of "<<a<<" and  "<<b<<"  =  "<<c;
}
else if(op=='-')
{
c=a-b;
cout<<"Subtraction of "<<a<<" and  "<<b<<"  =  "<<c;
}

else if(op=='*')
{
c=a*b;
cout<<"Multiplication of "<<a<<"  and  "<<b<<"  =  "<<c;
}

else if(op=='/')
{
c=a/b;
cout<<a<<" divided by  "<<b<<"  =  "<<c;
}
else if(op=='%')
{
c=a%b;
cout<<"Remainder of "<<a<<" divided by  "<<b<<"  =  "<<c;
}
else
{
cout<<"INVALID OPERATOR!!  Please enter correct one";
}
getch();
}
Run the program using Ctrl+F9

Output:
First Run
Enter first number :  4
Enter second number : 2
Enter  any operator from + , - , * , / ,% : *

Multiplication of 4 and 2 = 8

Second Run
Enter first number :  10
Enter second number : 40
Enter  operator from + , - , * , / ,% : +

Addition of 10 and 40 = 50

Third Run
Enter first number :  100
Enter second number : 20
Enter  operator from + , - , * , / ,% :  -
Subtraction  of 100 and 20 = 80

Fourth Run
Enter first number :  40
Enter second number : 5
Enter  operator from + , - , * , / ,% :  /

40 divided by 5= 8

Fifth Run
Enter first number :  20
Enter second number :4
Enter  operator from + , - , * , / ,% :  %

Remainder of 20 divided by 4 = 0
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