Thread: Not understanding the concept of multidimensional arrays and functions

Hi,
I am having alot of trouble with the concept of multidimensional arrays and functions.

for one dimensional arrays, when calling the function, we use the function name and number of elements. But this does not seem to work with multidimensional array.

note: I have not used pointers. I have seen some sample programs with pointers but do not understand them yet

example program

Code:

#include <stdio.h>

#define LEN 10

int sum(int a[][LEN], int n)
{
	//do something
}

int main()
{
	int b[10][LEN], total;

	total = sum(b[][LEN], 10); //how do I call sum function here?

	getchar();
	return 0;
}

noted.
I see that if I declare the rows and cols in the function definition for array a (i.e. have only 1 argument), then I only need to pass the name in the function main..

for example.

Originally Posted by oogabooga

Just pass the name of the array.

Code:

#include <stdio.h>
 
#define ROWS 5
#define COLS 10

int sum(int a[ROWS][COLS])
{
    // ...
}
 
int main()
{
    int b[ROWS][COLS], total;
 
    total = sum(b);
 
    return 0;
}

Why this this the case? Perhaps I may need to learn pointers to understand this?

thank you