C# program that simulates a simple calculator

Question

How do I to?:

Write a C# program that simulates a simple calculator. Initially, the user chooses an operation:

Please choose an operation (+,-,*,/):+

Repeat that user input until he/she has entered one of the four operator symbols (+, , *, /). Then, ask the user needs to enter two double operands:

Please enter first operand: 12.34

Please enter second operand: 45.67

Repeat that user input until the user has entered two numbers.

Now use a “switch” statement to test for the four different operands:

Switch

(operator) {

case “+”:

result = addNumbers (first, second);

break;

...

}

Each operand triggers invoking a separate method (addNumber,

subtractNumber, multiplyNumber, divideNumber) and assigning the result to a doublevariable “result”. Finally, print out:

The result of <first> <operator> <second> is: <result>.

Pankaj Kumar Choudhary · Answer

You can try this code: static void Main(string[] args) { double num1; double num2; int status = 1; string operand; double answer; while (status == 1) { Console.WriteLine(Please enter the first num: ); num1 = Convert.ToInt32(Console.ReadLine()); Console.WriteLine( Enter Your Operation among +  /* - ); operand = Console.ReadLine(); Console.WriteLine(Please enter the second num: ); num2 = Convert.ToInt32(Console.ReadLine()); switch (operand) { case +: answer = num1 + num2; status = 1; break; case -: answer = num1 - num2; status = 1; break; case *: answer = num1 * num2; status = 1; break; case /: answer = num1 / num2; status = 1; break; default: answer = 0; status = 0; break; } if(status==1) Console.WriteLine(num1.ToString() +   + operand +   + num2.ToString() +  =  + answer.ToString()); } Console.ReadLine(); }

Mohammed Musekula · Answer

thanks

Abhishek Jaiswal · Answer

hey ! Try this class Program { static void Main ( string [ ] args) { int num1; int num2; string operand; float answer; Console . Write ( Please enter the first num : ); num1 = Convert.ToInt32 ( Console . ReadLine ( )); Console . Write ( Please enter an operand (+ - / *): ); operand = Console . ReadLine ( ); Console . Write ( Please enter the second num : ); num2 = Convert.ToInt32 ( Console . ReadLine ( )); switch (operand) { case +: answer = num1 + num2; break ; case -: answer = num1 - num2; break ; case *: answer = num1 * num2; break ; case /: answer = num1 / num2; break ; default : answer = 0; break ; } Console . WriteLine ( num1.ToString ( ) +   + operand +   + num2.ToString ( ) +  =  + answer . ToString ( )); Console . ReadLine ( ); } }