added array to func

C/2d_array_to_func.c

@@ -0,0 +1,31 @@
+//Passing 2D array to function
+
+#include<stdio.h>
+
+double average(int [][2], int, int); //no need to specify array/variable names in this step
+
+void main()
+{
+    int M=3,N=2;
+
+    double mean;
+    int matrix[3][2]=  
+                    {
+                        {1,2},
+                        {3,4},
+                        {5,6}
+                        };
+
+    mean = average(matrix,M,N);
+    printf("average over the matrix is %f", mean);
+}
+
+double average(int x[][2],int M,int N)  // require bounds for all dimensions except the first
+{
+    int i, j;
+    double sum = 0.0;
+    for (i=0; i<M; i++)
+        for(j=0; j<N; j++)
+            sum += x[i][j];
+    return(sum/(M*N));
+}