*DESCRIPTION:*armstrong number in c: This program prints armstrong number. In our program we ask the user to enter a number and then we use a loop from one to the entered number and check if it is an armstrong number and if it is then the number is printed on the screen. Remember a number is armstrong if the sum of cubes of individual digits of a number is equal to the number itself. For example 371 is an armstrong number as 33 + 73 + 13 = 371. Some other armstrong numbers are 0, 1, 153, 370, 407.

*C code*#include<stdio.h>

#include<conio.h>

main()

{

int r;

long number = 0, c, sum = 0, temp;

printf("Enter the maximum range upto which you want to find armstrong numbers ");

scanf("%ld",&number);

printf("Following armstrong numbers are found from 1 to %ld\n",number);

for( c = 1 ; c <= number ; c++ )

{

temp = c;

while( temp != 0 )

{

r = temp%10;

sum = sum + r*r*r;

temp = temp/10;

}

if ( c == sum )

printf("%ld\n", c);

sum = 0;

}

getch();

return 0;

}

Armstrong number program executable.

OUTPUT;

Enter the maximum range upto which you want to find armstrong numbers1000

Following armstrong numbers are found from 1 to 1000

1

153

370

371

407

*purpose of returning zero*Every c program begins with function main,

and main is called by operating system of your computer .

So we return a value to os indicating whether our program

has successfully executed or an error has occurred. Returning zero

indicates success i.e. program has been executed successfully.armstrong number c program

.

*CASE1:*armstrong number c program: c programming code to check

whether a number is armstrong or not

DESCRIPTION:

A number is armstrong

if the sum of cubes of individual digits of a number

is equal to the number itself. For example 371 is an

armstrong number as 33 + 73 + 13 = 371.

Some other armstrong numbers are: 0, 1, 153, 370, 407.

C programming code

#include <stdio.h>

main()

{

int number, sum = 0, temp, remainder;

printf("Enter a number\n");

scanf("%d",&number);

temp = number;

while( temp != 0 )

{

remainder = temp%10;

sum = sum + remainder*remainder*remainder;

temp = temp/10;

}

if ( number == sum )

printf("Entered number is an armstrong number.");

else

printf("Entered number is not an armstrong number.");

return 0;

}

OUTPUT;

ENTER A NUMBER

407

ENTER NUMBER IS AN ARMSTRONG NUMBER

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