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C Exercises: Find the the Authomorphic numbers between 1 to 1000

C Numbers: Exercise-22 with Solution

Write a program in c++ to find the the Authomorphic numbers between 1 to 1000.

Sample Solution:

C Code:

# include <stdio.h>
# include <stdlib.h>
# include <stdbool.h>

bool chkAutomor(int num1)
{
    int sqno = num1 * num1;
    while (num1 > 0)
    {
        if (num1 % 10 != sqno % 10)
            return false;
        num1 /= 10;
        sqno /= 10;
    }
    return true;
}
int main()
{
    int i;
  printf("\n\n Find the the Authomorphic numbers between 1 to 1000 \n");
  printf(" -------------------------------------------------------\n");
  printf(" The Authomorphic numbers are: ");
	for(i=1;i<=1000;i++)
	{
      if( chkAutomor(i))
         printf("%d ",i);
	}
 printf("\n");
}

Sample Output:

 The Authomorphic numbers are: 1 5 6 25 76 376 625 

Pictorial Presentation:

C programming: Check if a number is Authomorphic or not.

Flowchart:

Flowchart: Find the the Authomorphic numbers between 1 to 1000

C Programming Code Editor:

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C Programming: Tips of the Day

Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?

It is a quirk of the syntax for passing arrays to functions.

Actually it is not possible to pass an array in C. If you write syntax that looks like it should pass the array, what actually happens is that a pointer to the first element of the array is passed instead.

Since the pointer does not include any length information, the contents of your [] in the function formal parameter list are actually ignored.

Ref : https://bit.ly/3fhlvdH