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Write a program to create a calculator using switch cases.
Answer:
# include
using namespace std;
int main()
{
char op;
float num1, num2;
cout > op;
cout > num1 >> num2;
switch(op)
{
case '+':
cout
Asked In ::
Language:
Shyam
7 Jul, 2017 9:30 AM
# include <stdio.h>
int main() {
char operator;
double firstNumber,secondNumber;
printf("Enter an operator (+, -, *,): ");
scanf("%c", &operator);
printf("Enter two operands: ");
scanf("%lf %lf",&firstNumber, &secondNumber);
switch(operator)
{
case '+':
printf("%.1lf + %.1lf = %.1lf",firstNumber, secondNumber, firstNumber + secondNumber);
break;
case '-':
printf("%.1lf - %.1lf = %.1lf",firstNumber, secondNumber, firstNumber - secondNumber);
break;
case '*':
printf("%.1lf * %.1lf = %.1lf",firstNumber, secondNumber, firstNumber * secondNumber);
break;
case '/':
printf("%.1lf / %.1lf = %.1lf",firstNumber, secondNumber, firstNumber / firstNumber);
break;
/* operator doesn't match any case constant (+, -, *, /)*/
default:
printf("Error! operator is not correct");
}
return 0;
}
Language:
Nick
7 Jul, 2017 9:30 AM
# include <iostream>
using namespace std;
int main()
{
char op;
float num1, num2;
cout << "Enter operator either + or - or * or /: ";
cin >> op;
cout << "Enter two operands: ";
cin >> num1 >> num2;
switch(op)
{
case '+':
cout << num1+num2;
break;
case '-':
cout << num1-num2;
break;
case '*':
cout << num1*num2;
break;
case '/':
cout << num1/num2;
break;
default:
/* If the operator is other than +, -, * or /, error message is shown */
cout << "Error! operator is not correct";
break;
}
return 0;
}
Language:
Siddhartha Paul
19 Jun, 2019 2:16 PM
import java.util.*;
public class SimpleCalculator
{
public static void main(String []args)
{
int a,b;
Scanner sc=new Scanner(System.in);
System.out.println("1. Addition\n2. Subtraction\n3. Multiplication\n4. Division");
System.out.println("Enter your choice: ");
int ch=sc.nextInt();
switch(ch)
{
case 1: System.out.println("Enter 2 numbers: ");
a=sc.nextInt();
b=sc.nextInt();
System.out.println(a+" + "+b+" = "+(a+b));
break;
case 2: System.out.println("Enter 2 numbers: ");
a=sc.nextInt();
b=sc.nextInt();
System.out.println(a+" - "+b+" = "+(a-b));
break;
case 3: System.out.println("Enter 2 numbers: ");
a=sc.nextInt();
b=sc.nextInt();
System.out.println(a+" x "+b+" = "+(a*b));
break;
case 4: System.out.println("Enter 2 numbers: ");
a=sc.nextInt();
b=sc.nextInt();
System.out.println(a+" / "+b+" = "+(a/b));
break;
default: System.out.println("Wrong choice!!");
}
}
}
