C Program to Check Armstrong Number


A simple C program to check whether an integer (entered by the user) is an Armstrong number or not using while loop and if..else statement.

Related Topics

Structures  Functions 


#include <stdio.h>
#include <math.h>
int main()
    int number, originalNumber, remainder, result = 0, n = 0 ;

    printf("Enter an integer: ");
    scanf("%d", &number);

     originalNumber = number;
    while (originalNumber != 0)
        originalNumber /= 10;

    originalNumber = number;

    while (originalNumber != 0)
        remainder = originalNumber%10;
        result += pow(remainder, n);
        originalNumber /= 10;

    if(result == number)
        printf("%d is an Armstrong number.", number);
        printf("%d is not an Armstrong number.", number);

    return 0;


Enter an integer: 1634
1634 is an Armstrong number.


C Program to Add Two Complex Numbers by Passing Structure to a Function

In the structure complex, we are using float datatype for variables, real and imag since our concern is to add any two complex numbers with a possible fractional value.

In the main() function, the real part and the imaginary part of the complex numbers are taken separtely using scanf().

The structures n1 and n2 are passed as an argument of function add(). The function computes the sum and returns the structure variable temp to the main() function.

The final result is printed using printf() throught the main() function.


#struct  #return