The Conditional Operator - C Operator

C examples for Operator:Conditional Operator

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Introduction

The conditional operator evaluates to one of two expressions, depending on whether a logical expression evaluates true or false.

The format of the conditional operator looks like this: 

condition ? expression1 : expression2

You can use the conditional operator in a statement such as this: 

x = y > 7 ? 25 : 50;

It has the the same effect as this: 

if(y > 7)
  x = 25;
else
  x = 50;

Demo Code

#include <stdio.h>

int main(void)
{
  const double unit_price = 3.50;           // Unit price in dollars
  const double discount1 = 0.05;            // Discount for more than 10
  const double discount2 = 0.1;             // Discount for more than 20
  const double discount3 = 0.15;            // Discount for more than 50

  double total_price = 0.0;
  int quantity = 0;

  printf("Enter the number that you want to buy:");
  scanf(" %d", &quantity);

  total_price = quantity*unit_price*(1.0 -
                   (quantity > 50 ? discount3 : (
                           quantity > 20 ? discount2 : (
                                  quantity > 10 ? discount1 : 0.0))));

  printf("The price for %d is $%.2f\n", quantity, total_price);
  return 0;/*from   w  w w  .  j  a v a 2s  .c o  m*/
}

Result


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