Write a program in C++ to create basic calculator (add, sub, mul, div) using switch case.

Program:-

#include<iostream> 
using namespace std;
int main() 
{ 
    int a,b,ch,ans;
    cout<<"Enter the first number:"; 
    cin>>a; 
    cout<<"Enter the second number:"; 
    cin>>b; 
    cout<<"1.Addition \n2.Subtraction \n3.Multiplication \n4.Division \n"; 
    cout<<"Enter your choice:"; 
    cin>>ch; 
    switch(ch) 
    { 
        case 1: ans=a+b; 
        break;
        case 2: ans=a-b;
        break; 
        case 3: ans=a*b;
        break; 
        case 4: ans=a/b; 
        break; 
        default: cout<<"Invalid choice!"; 
        
    } 
        cout<<"Answer is:"<<ans<<endl; 
    

}

Output:-