Find the sum in 2d array with pointers in c -

i have tried "sum=6" , wrong. whats wrong code? here code:

#include <stdio.h> #define row 2 #define col 3  int sum(int(*array)[3]);  int main(void) {     int a[row][col] = { {1 , 2, 3} ,                         {4 , 5, 6} };     printf(" sum = %d\n", sum (a));     return 0; }  int sum(int(*array)[3])  {     int i,j, sum = 0;     (i =0; < row ; ++) {         (j =0; j < col ; j ++) {             sum = sum + *(*( array +i )+j);         }     } } 

you forget return value of sum in function

int sum(int(*array)[3])  {     int i,j, sum = 0;     (i =0; < row ; ++) {         (j =0; j < col ; j ++) {             sum = sum + *(*( array +i )+j);         }     }     return sum; /* here */ } 

and notice

sum = sum + array[i][j]; 

is more readable

sum = sum + *(*( array +i )+j);