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  1. // C Program to make a Simple Calculator using 
  2. // switch-case statements
  3. #include <stdio.h>
  4. #include <float.h>
  5.  
  6. int main() {
  7.     char op='+';
  8.     double a=10.5, b=5.4, res;
  9.  
  10.     // Read the operator
  11.     // printf("Enter an operator (+, -, *, /): ");
  12.     // scanf("%c", &op);
  13.  
  14.     // // Read the two numbers
  15.     // printf("Enter two operands: ");
  16.     // scanf("%lf %lf", &a, &b);
  17.  
  18.     // Define all four operations in the corresponding
  19.     // switch-case
  20.     switch (op) {
  21.     case '+':
  22.         res = a + b;
  23.         break;
  24.     case '-':
  25.         res = a - b;
  26.         break;
  27.     case '*':
  28.          res = a * b;
  29.         break;
  30.     case '/':
  31.         res = a / b;
  32.         break;
  33.     default:
  34.         printf("Error! Incorrect Operator Value\n");
  35.         res = -DBL_MAX;
  36.     }
  37.     if(res!=-DBL_MAX)
  38.       printf("%.2lf", res);
  39.  
  40.     return 0;
  41. }
  42.  
Success #stdin #stdout 0s 5288KB
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https://ideone.com/iC5H80
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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