Added endian.c which identifies machine is Little/Big Endian

Author: sudhakar-mnsr

README.md

@@ -100,6 +100,7 @@ These program are written in codeblocks ide for windows. These programs are not
 - [Stack implemenation of linklist](https://github.com/gouravthakur39/beginners-C-program-examples/blob/master/Stack%20-%20Linked%20List.c)
 - [Swap integers without 3rd variable](https://github.com/gouravthakur39/beginners-C-program-examples/blob/master/SwapIntegers.c)
 - [Swap value without third variable](https://github.com/gouravthakur39/beginners-C-program-examples/blob/master/SwapValueWithoutUsingThirdVariable.c)
+- [Identify machine is big-endian or little-endian] (https://github.com/gouravthakur39/beginners-C-program-examples/blob/master/endian.c)
 
 
 

endian.c

@@ -0,0 +1,34 @@
+/*************************************************************************************/
+// Since size of character is 1 byte when the character pointer is de-referenced 
+// it will contain only first byte of integer. 
+// If machine is little endian then *c will be 1 (because last byte is stored first)
+// if machine is big endian then *c will be 0.
+
+//    higher memory
+//    ----->
+//    +----+----+----+----+
+//    |0x01|0x00|0x00|0x00|
+//    +----+----+----+----+
+//    c
+//    |
+//   &i
+
+//    +----+----+----+----+
+//    |0x00|0x00|0x00|0x01|
+//    +----+----+----+----+
+//    c
+//    |
+//   &i
+/*************************************************************************************/
+
+#include <stdio.h> 
+int main()  
+{ 
+   unsigned int i = 1; 
+   char *c = (char*)&i; 
+   if (*c)     
+       printf("Little endian\n"); 
+   else
+       printf("Big endian\n"); 
+   return 0; 
+}