﻿ C Program: Check a number is a Pronic or Heteromecic # C Exercises: Check whether a number is a Pronic Number or Heteromecic Number or not

## C Numbers: Exercise-19 with Solution

Write a program in C to check whether a number is a Pronic Number or Heteromecic Number or not.

Test Data
Input a number: 132

Sample Solution:

C Code:

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

int main()
{
int prno,i,n,flg;
printf("\n\n Check whether a number is a Pronic Number or Heteromecic Number or not: \n");
printf(" ----------------------------------------------------------------------------\n");
printf(" Input a number: ");
scanf("%d",&prno);
for(i=1;i<=prno;i++)
{
if(i*(i+1)==prno)
{
flg=1;
break;
}
}

if(flg==1)
{
printf(" The given number is a Pronic Number.\n");
}
else
{
printf(" The given number is not a Pronic Number.\n");
}
}
```
```

Sample Output:

``` Input a number: 132
The given number is a Pronic Number.
```

Pictorial Presentation: Flowchart: -->

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