From 575f8c94fc12265c920da7cc3f7d569ca3d3139d Mon Sep 17 00:00:00 2001
From: Nikhil Bhat <nikhilganeshbhat@gmail.com>
Date: Fri, 4 Oct 2019 22:00:08 +0530
Subject: [PATCH] Added ArmstrongNumber.c

---
 README.md              |  9 +++---
 misc/ArmstrongNumber.c | 64 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+), 4 deletions(-)
 create mode 100644 misc/ArmstrongNumber.c

diff --git a/README.md b/README.md
index 5f720515..4c96e43a 100644
--- a/README.md
+++ b/README.md
@@ -73,19 +73,20 @@ C
 
 
 ## Misc
+	- ArmstrongNumber	
 	- Binning
 	- Factorial
 	- Fibonacci
+	- Greatest Common Divisor	
 	- isArmstrong
 	- LongestSubSequence
 	- palindrome
+	- prime factorization	
 	- QUARTILE
 	- rselect
 	- strongNumber
-	- TowerOfHanoi
-	- Greatest Common Divisor
-	- Sudoku Solver
-	- prime factorization
+	- Sudoku Solver	
+	- TowerOfHanoi	
 
 ## Project Euler
 	- Problem 1
diff --git a/misc/ArmstrongNumber.c b/misc/ArmstrongNumber.c
new file mode 100644
index 00000000..ced9b9f8
--- /dev/null
+++ b/misc/ArmstrongNumber.c
@@ -0,0 +1,64 @@
+//A number is called as Armstrong number if sum of cubes of digits of number is equal to the number itself.
+// For Example 153 is an Armstrong number because 153 = 1³+5³+3³.
+#include <stdio.h> 
+
+//Function to calculate x raised to the power y
+int power(int x, unsigned int y) 
+{ 
+	if (y == 0) 
+		return 1; 
+	if (y % 2 == 0) 
+		return power(x, y / 2) * power(x, y / 2); 
+	return x * power(x, y / 2) * power(x, y / 2); 
+} 
+
+//Function to calculate order of the number 
+int order(int x) 
+{ 
+	int n = 0; 
+	while (x) { 
+		n++; 
+		x = x / 10; 
+	} 
+	return n; 
+} 
+
+// Function to check whether the given number is 
+// Armstrong number or not 
+int isArmstrong(int x) 
+{ 
+	// Calling order function 
+	int n = order(x); 
+	int temp = x, sum = 0; 
+	while (temp)
+	{ 
+		int r = temp % 10; 
+		sum += power(r, n); 
+		temp = temp / 10; 
+	} 
+
+	// If satisfies Armstrong condition 
+	if (sum == x) 
+		return 1; 
+	else
+		return 0; 
+} 
+
+//
+int main() 
+{ 
+	int x = 153; 
+	if (isArmstrong(x) == 1) 
+		printf("True\n"); 
+	else
+		printf("False\n"); 
+
+	x = 1253; 
+	if (isArmstrong(x) == 1) 
+		printf("True\n"); 
+	else
+		printf("False\n"); 
+
+	return 0; 
+} 
+