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6. Calculator_using_Function.cpp
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6. Calculator_using_Function.cpp
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/*
CALCULATOR USING FUNCTIONS AND IF/ELSE (CLI)
***********************************************************
@author : Akash Prasher ~~ https://github.com/akashprasher/
This Code is written in CodeBlocks.
*/
#include <iostream>
using namespace std;
//function for addition
int addition (int a, int b)
{
int r;
r=a+b;
return r;
}
//function for subtraction
int sub (int a, int b)
{
int r;
r=a-b;
return r;
}
//function for multiplication
int multiply (int a, int b)
{
int r;
r=a*b;
return r;
}
//function for division
int division (int a, int b)
{
int r;
r=a/b;
return r;
}
int main ()
{
int num1,num2,choice,res;
//Getting input
cout<<"Enter the First Number"<<endl;
cin>>num1;
cout<<"Enter the Second Number"<<endl;
cin>>num2;
//Menu with option for operations
cout<<"\nChoose Any ONE(1-4)"<<endl;
cout<<"1. Addition"<<endl;
cout<<"2. Subtraction"<<endl;
cout<<"3. Multiplication"<<endl;
cout<<"4. Division"<<endl;
cin>>choice;
cout<<"\n";
/**checking the entered option using
if/else statement
*/
//if addition is chosen.
if(choice==1)
{
res=addition(num1,num2);
cout<<"Addition : "<<res<<endl;
}
//if subtraction is chosen.
else if(choice==2)
{
res=sub(num1,num2);
cout<<"Subtraction : "<<res<<endl;
}
//if multiplication is chosen
else if(choice==3)
{
res=multiply(num1,num2);
cout<<"Multiplication : "<<res<<endl;
}
//if division is chosen
else if(choice==4)
{
res=division(num1,num2);
cout<<"Division : "<<res<<endl;
}
//for wrong input (i.e. except 1-4)
else
{
cout<<"Error! Please Choose Right Option"<<endl;
}
return 0;
}