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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     char operator;
  5.     double num1, num2;
  6.     double result;
  7.  
  8.     // Asking user to enter operator
  9.     printf("Enter an operator (+, -, *, /): ");
  10.     scanf("\n%c", &operator);
  11.  
  12.     // Asking user to enter two operands
  13.     printf("Enter two numbers: ");
  14.     scanf("%lf %lf", &num1, &num2);
  15.  
  16.     switch (operator) {
  17.         case '+':
  18.             result = num1 + num2;
  19.             printf("%.2lf + %.2lf = %.2lf\n", num1, num2, result);
  20.             break;
  21.         case '-':
  22.             result = num1 - num2;
  23.             printf("%.2lf - %.2lf = %.2lf\n", num1, num2, result);
  24.             break;
  25.         case '*':
  26.             result = num1 * num2;
  27.             printf("%.2lf * %.2lf = %.2lf\n", num1, num2, result);
  28.             break;
  29.         case '/':
  30.             if (num2 != 0) {
  31.                 result = num1 / num2;
  32.                 printf("%.2lf / %.2lf = %.2lf\n", num1, num2, result);
  33.             } else {
  34.                 printf("Error! Division by zero is not allowed.\n");
  35.             }
  36.             break;
  37.         default:
  38.             printf("Error! Operator is not correct.\n");
  39.             break;
  40.     }
  41.  
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0s 5284KB
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Standard input is empty
stdout
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Enter an operator (+, -, *, /): Enter two numbers: Error! Operator is not correct.
https://ideone.com/1riIDk
language:
C (gcc 8.3)
created:
43 days ago
visibility:
public

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