C Program to Generate Armstrong Numbers

In this tutorial you will learn about the C Program to Generate Armstrong Numbers and its application with practical example.

In this tutorial, we will learn to create a C program that will Generate Armstrong Numbers in C programming.

Table Of Contents−

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following C programming topics:

Operators in C Programming.

Basic Input and Output function in C Programming.
Basic C programming.
While loop in C programming.

Program to Generate Armstrong Numbers:-

As we all know the c is a very powerful language. With the help of c programming language, we can make many programs. We can perform many input-output operations using c programming. In today’s tutorial, we take the input numbers from the user. Then we will Generate Armstrong Numbers between the taken range with the help of the c programming language.

With the help of this program, we can Generate Armstrong Numbers.

Algorithm:-

1. Declare the variables for the program. 

2. Taking the input numbers from and to by the user. 

3. Calculating the <strong>Armstrong Numbers</strong>.  

4. Print the Result. 

5. End the program.

1. Declare the variables for the program.

2. Taking the input numbers from and to by the user.

3. Calculating the <strong>Armstrong Numbers</strong>.

4. Print the Result.

5. End the program.

Program to Generate Armstrong Numbers:-

/* C Program to Generate Armstrong Numbers */
#include<stdio.h>

int main()
{
    /* Declaring the variables for the program */
    int no1, no2, flag, noOfDigit, num, res=0, rem, pow, i;
    /* Taking the range of numbers between which the we need 
    to get the Armstrong Numbers */
    printf("Enter the Interval: ");
    scanf("%d%d", &no1, &no2);
    //prinitng the armstrong numbers
    printf("\nArmstrong Numbers between %d and %d:-\n", no1, no2);
    while(no1<=no2)
    {
        flag = no1;
        noOfDigit=0;
        while(flag>0)
        {
            flag = flag/10;
            noOfDigit++;
        }
        num = no1;
        while(num>0)
        {
            rem = num%10;
            pow = 1;
            i = 0;
            while(i<noOfDigit)
            {
                pow = pow*rem;
                i++;
            }
            res = res + pow;
            num = num/10;
        }
        if(res==no1)
        //prinitng the armstrong numbers
            printf(" %d\n", res);
        no1++;
        res = 0;
    }

    return 0;
}

/* C Program to Generate Armstrong Numbers */

#include<stdio.h>

int main()

{

/* Declaring the variables for the program */

int no1, no2, flag, noOfDigit, num, res=0, rem, pow, i;

/* Taking the range of numbers between which the we need

to get the Armstrong Numbers */

printf("Enter the Interval: ");

scanf("%d%d", &no1, &no2);

//prinitng the armstrong numbers

printf("\nArmstrong Numbers between %d and %d:-\n", no1, no2);

while(no1<=no2)

{

flag = no1;

noOfDigit=0;

while(flag>0)

{

flag = flag/10;

noOfDigit++;

}

num = no1;

while(num>0)

{

rem = num%10;

pow = 1;

i = 0;

while(i<noOfDigit)

{

pow = pow*rem;

i++;

}

res = res + pow;

num = num/10;

}

if(res==no1)

//prinitng the armstrong numbers

printf(" %d\n", res);

no1++;

res = 0;

}

return 0;

}

Output:-

In the above program, we have first initialized the required variable.

no1 = it will hold the integer value.

no2 = it will hold the integer value.
flag = it will hold the integer value.
noOfDigit = it will hold the integer value.

num = it will hold the integer value.
res = it will hold the integer value.
pow = it will hold the integer value.

i = it will hold the integer value.

Taking the input integer number interval from the user.

Swapping the numbers.

Printing the output numbers.

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C Program to Generate Armstrong Numbers