Question

write a function declaration for a 2d array where each row size is 8 and the function does not return anything.

Answer 1

Code Language is not given so I am considering C language.
As mentioned in question function does not return anything that means its return type should be is void. Function name is not mentioned so I am taking function name as print2dArray.
In question only row size 8 is given so I am taking 2 as column size.

so with all above consideration the function declaration for a 2d array where each row size is 8 and the function does not return anything is as follows.

void print2dArray(int arr[8][2]);

just to demonstrate I have added following C code as well.

#include <stdio.h>

void print2dArray(int arr[8][2]);

int main()
{ 
        int arr[][2] = { {1, 2}, {3, 4}, {5, 6}, {7, 8}, {9, 10}, {11, 12}, {13, 14}, {15, 16} }; 
        print2dArray(arr); 
        return 0; 
} 

void print2dArray(int arr[8][2])
{ 
        int i, j; 
        for (i = 0; i < 8; i++) 
        for (j = 0; j < 2; j++) 
        printf("%d ", arr[i][j]); 
}