Add spiral array in C (#2322)

Spiral_Array/SpiralArray.c

@@ -0,0 +1,96 @@
+#include<stdio.h>
+int main()
+{
+   int a[20][20], int d, int i, int j, int ra, int ca, int r, int c, int k;
+    //accepting number of rows
+    do
+    {
+       printf("enter number of rows:");        
+       scanf("%d", &ra);
+    }while(ra < 1);
+    //accepting number of columns
+    do
+    {
+       printf("enter number of columns:");     
+       scanf("%d", &ca);
+    }while(ca < 1);
+    printf("\n\t enter elements:");
+    printf("\n");
+    //accepting matrix
+    for(i = 0; i < ra; i++)
+    {
+        for(j = 0; j < ca; j++)
+        {
+            scanf("%d", &a[i][j]);      
+        }
+    }
+    printf(" INTIAL MATRIX = ");
+    for(i = 0; i < ra; i++)
+    {
+       printf("\n");
+
+       for(j = 0; j < ca; j++)
+       {
+           printf("%d" , a[i][j]);
+       }
+    }
+    printf("\n");
+    printf("spiral form = ");
+    printf("\n");
+    r = ra - 1;
+    c = ca - 1;
+    i = 0;
+    j = 0;
+    //printing each side so as to get spiral form
+    while(i <= c && j <= r)
+    {
+        if(d == 0)
+        {
+            for(k = i; k <= c; k++)
+            {
+               printf("%d", a[j][k]);                 
+            }
+            j++;
+            d = 1;
+       }
+       else if(d == 1)
+       {
+            for(k = j; k <= r; k++)
+            {
+               printf("%d", a[k][c]);
+            }
+            c--;
+            d = 2;
+       }
+       else if(d == 2)
+       {
+            for(k = c; k >= i; k--)
+            {
+               printf("%d", a[r][k]);
+            }
+            r--;
+            d = 3;
+       }
+       else if(d == 3)
+       {
+            for(k = r; k >= j; k--)
+            {
+               printf("%d", a[k][i]);
+            }
+            i++;
+            d = 0;
+       }
+    }
+return 0;
+}
+/* Test Cases
+
+Input:
+        1    2   3   4
+        5    6   7   8
+        9   10  11  12
+        13  14  15  16
+Output: 
+1 2 3 4 8 12 16 15 14 13 9 5 6 7 11 10 
+
+*/