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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int a, b, c;
  5.     char ch;
  6.  
  7.     printf("Enter first integer: ");
  8.     scanf("%d", &a) ;
  9.  
  10.     printf("Enter second integer: ");
  11.     scanf("%d", &b)  ;
  12.  
  13.     printf("Enter operand (+, -, *, /): ");
  14.     scanf(" %c", &ch); // space before %c to skip whitespace
  15.  
  16.     switch (ch) {
  17.         case '+':
  18.             c = a + b;
  19.             printf("User wants addition: %d\n", c);
  20.             break;
  21.         case '-':
  22.             c = a - b;
  23.             printf("User wants subtraction: %d\n", c);
  24.             break;
  25.         case '*':
  26.             c = a * b;
  27.             printf("User wants multiplication: %d\n", c);
  28.             break;
  29.         case '/':
  30.             if (b != 0) {
  31.                 c = a / b;
  32.                 printf("User wants division: %d\n", c);
  33.             } else {
  34.                 printf("Error: Division by zero is not allowed.\n");
  35.             }
  36.             break;
  37.         default:
  38.             printf("Invalid operator.\n");
  39.     }
  40.  
  41.     return 0;
  42. }
  43.  
  44.  
  45.  
  46.  
  47.  
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
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Standard input is empty
stdout
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Enter first integer: Enter second integer: Enter operand (+, -, *, /): Invalid operator.
https://ideone.com/kpOad2
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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