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

Last update on August 05 2025 12:55:12 (UTC/GMT +8 hours)

19. Pronic Number Check Variants

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

Sample Solution:

C Code:

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

int main()
{
    int prno, i, n, flg;  // Variable declaration: prno is the input number, i is a loop variable, n is not used, flg is a flag for checking

    // Printing information about the program
    printf("\n\n Check whether a number is a Pronic Number or Heteromecic Number or not: \n");
    printf(" ----------------------------------------------------------------------------\n");

    // Asking user for input
    printf(" Input a number: ");
    scanf("%d", &prno);  // Reading input from user

    for (i = 1; i <= prno; i++)  // Loop to check for Pronic Number
    {
        if (i * (i + 1) == prno)  // Checking if 'prno' is a product of consecutive numbers
        {
            flg = 1;  // Setting flag to 1 if 'prno' is a Pronic Number
            break;    // Exiting the loop if condition is met
        }
    }

    if (flg == 1)  // Checking the flag value to determine if 'prno' is a Pronic Number
    {
        printf(" The given number is a Pronic Number.\n");  // Printing if 'prno' is a Pronic Number
    }
    else
    {
        printf(" The given number is not a Pronic Number.\n");  // Printing if 'prno' is not a Pronic Number
    }

    return 0;  // Returning 0 to indicate successful execution
}

Sample Output:

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

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to verify if a number is pronic by testing the product of two consecutive integers.
• Write a C program to list pronic numbers using an efficient loop that finds adjacent factors.
• Write a C program to determine the pronic property for large numbers using mathematical bounds.
• Write a C program to optimize pronic number detection by iterating through possible factor pairs.

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