﻿ C : Show the Armstrong number for a given range of number

# C Exercises: Find the Armstrong number for a given range of number

## C For Loop: Exercise-30 with Solution

Write a C program to find the Armstrong number for a given range of number.

Sample Solution:

C Code:

``````/*
When the sum of the cube of the individual digits of a number
is equal to that number, the number is called Armstrong number.
For example 153. Sum of its divisor is 13 + 53 + 33 = 1 + 125 + 27 = 153
*/
#include <stdio.h> // Include the standard input/output header file.

int main() {
int num, r, sum, temp; // Declare variables for the input number, remainder, sum, and a temporary variable.
int stno, enno; // Declare variables for the starting and ending range.

// Prompt the user to input the starting range.
printf("Input starting number of range: ");
scanf("%d", &stno); // Read the starting range from the user.

// Prompt the user to input the ending range.
printf("Input ending number of range : ");
scanf("%d", &enno); // Read the ending range from the user.

// Print a message indicating that Armstrong numbers will be displayed.
printf("Armstrong numbers in the given range are: ");

// Start a loop to iterate through the numbers in the specified range.
for (num = stno; num <= enno; num++) {
temp = num; // Set 'temp' to the current number for manipulation.
sum = 0; // Initialize 'sum' to zero.

// Start a loop to extract digits from 'temp'.
while (temp != 0) {
r = temp % 10; // Get the last digit of 'temp'.
temp = temp / 10; // Remove the last digit from 'temp'.
sum = sum + (r * r * r); // Calculate the sum of cubes of each digit.
}

// If the sum of cubes of digits is equal to the original number, print the number as an Armstrong number.
if (sum == num)
printf("%d ", num);
}

// Print a newline to separate the output.
printf("\n");

return 0; // Return 0 to indicate successful execution.
}
```
```

Sample Output:

```Input starting number of range: 1
Input ending number of range : 1000
Armstrong numbers in given range are: 1 153 370 371 407
```

Flowchart: C Programming Code Editor:

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