By | 25.12.2016

# Simple Calculator using switch case

Write a C++ Program to Design Simple Calculator using switch case. Here’s simple C++ Program to Design Simple Calculator using switch case in C++ Programming Language.

## Numbers in C++

Normally, when we work with Numbers, we use primitive data types such as int, short, long, float and double, etc. The number data types, their possible values and number ranges have been explained while discussing C++ Data Types.

Here is source code of the C++ Program to Design Simple Calculator using switch case. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

### SOURCE CODE : :

```/* C++ Program to Design Simple Calculator using switch case  */

# include <iostream>
using namespace std;

int main()
{
char op;
float num1, num2;

cout << "\nEnter 1st operand :: ";
cin >> num1;
cout << "\nEnter 2nd operand :: ";
cin >> num2;

cout << "\nEnter operator [ + or - or * or / ] :: ";
cin >> op;

switch(op)
{
case '+':
cout <<"\nAddition of [ "<<num1<<" + "<<num2<<" ] = "<< num1+num2<<"\n";
break;

case '-':
cout <<"\nSubtraction of [ "<<num1<<" - "<<num2<<" ] = "<< num1-num2<<"\n";
break;

case '*':
cout <<"\nMultiplication of [ "<<num1<<" * "<<num2<<" ] = "<< num1*num2<<"\n";
break;

case '/':
cout <<"\nDivide of [ "<<num1<<" / "<<num2<<" ] = "<< num1/num2<<"\n";
break;

default:
// If the operator is other than +, -, * or /, error message is shown
cout << "\nError! operator is not correct\n";
break;
}

return 0;
}```

### OUTPUT : :

```/* C++ Program to Design Simple Calculator using switch case  */

Enter 1st operand :: 23

Enter 2nd operand :: 56

Enter operator [ + or - or * or / ] :: +

Addition of [ 23 + 56 ] = 79

Process returned 0```

Above is the source code for C++ Program to Design Simple Calculator using switchcase which is successfully compiled and run on Windows System.The Output of the program is shown above .

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