Merge pull request WebClub-NITK#400 from incinirate/patch-1

Add string reverse implementation

Reverse_String/incin.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <string.h>
+
+#define MAX_STRING 256
+
+char *strrev(char *str) {
+    char *p1, *p2;
+
+    // Ensure the string exists and has data
+    if (! str || ! *str)
+        return str;
+
+    // Flip the characters on the ends of the string, progressing inward towards the string center
+    for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2) {
+        *p1 ^= *p2;
+        *p2 ^= *p1;
+        *p1 ^= *p2;
+    }
+
+    return str;
+}
+
+void main() { 
+    char str[MAX_STRING + 2]; // Two extra bytes, one for the newline (\n) and one for the NULL terminator
+
+    printf("\nEnter String: ");
+    fgets(str, MAX_STRING + 2, stdin);
+
+    str[strlen(str) - 1] = (char)NULL;
+
+    printf("Original: %s\n", str);
+    printf("Reversed: %s\n", strrev(str));
+
+    return 0;
+}