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Duck Number In C

Duck Number

Duck Number


C Program To Check Duck Numbers

A Duck number is a positive number which has zeroes present in it.
Example: 120, 1024, 102030 are all Duck numbers.
Note : A Numbers with only leading 0s is not considered as Duck Number.
Example:
Numbers Like 007 or 001 are Not Considered as Duck Numbers.
To check if a number is a Duck Number or not in C
you can use the following algorithm:
  1. Read the input number.
  2. Initialize a variable count to 0.
  3. While num is not equal to 0, perform the following steps:
    • Get the last digit of the num by using the modulo operator (%).
    • if last digit = 0 then increase count by 1
    • Divide the num by 10 to remove the last digit.
  4. If count = '0' the number is a Duck Number.
  5. If count not = '0' the number is Not a Duck Number.

Note that this implementation assumes that the input number is a positive integer. You may need to add additional checks for negative numbers or other cases depending on your requirements.

Here is an example implementation in C

Source Code

//C Program To Check Duck Numbers
#include<stdio.h>
#include<conio.h>
 void main()
   {
     int num , Rd , count=0;
     printf("Enter a Number To Check : ");
     scanf("%d",&num);
     while( num!=0 )
       {
         Rd  = num % 10 ;
         if( Rd==0 )
           count++;
         num = num / 10 ;
       }
     if( count>=1 )
       printf("It is a Duck Number . ");
     else
       printf("It is Not a Duck Number . ");
     getch();
   }

Output

Sample Input :
Enter a Number To Check : 1024
Sample Output:
It is a Duck Number

Sample Input :
Enter a Number To Check : 123
Sample Output:
It is Not a Duck Number

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