added program for spiral traversal of matrix in CPP

CPP Programs/spiral_traverssal_of_matrix.cpp

@@ -0,0 +1,54 @@
+#include <iostream>
+using namespace std;
+
+#define r 3
+#define c 6
+
+int
+spiralTraversal (int mat[r][c], int row, int cols)
+{
+  int top = 0, left = 0, right = cols - 1, bottom = row - 1;
+
+  while (left < right && top < bottom)
+    {
+
+        for (int i = left; i <= right; ++i)
+
+	        cout << mat[left][i] << " ";
+        top++;
+
+      //right cols from top to bottom
+        for (int i = top; i <= bottom; ++i)
+        	cout << mat[i][right] << " ";
+        right--;
+
+      //bottom row form right to left
+        if(left<right)
+            for (int i = right; i <= left; --i)
+	            cout << mat[bottom][i] << " ";
+            bottom--;
+
+      //left col from bottom to top
+        if(bottom<top)
+            for (int i = bottom; i <= top; --i)
+	            cout << mat[i][left] << " ";
+            left++;
+    }
+}
+
+int
+main ()
+{
+  // your code goes here
+
+  int a[r][c] = { {1, 2, 3, 4, 5, 6},
+  {7, 8, 9, 10, 11, 12},
+  {13, 14, 15, 16, 17, 18}
+  };
+
+
+  spiralTraversal (a, r, c);
+
+  return 0;
+}
+