Hi everyone,
I am trying to make a function such as

``void resetGrid(int grid[][gridSize])``

The function needs to input the 2-D array and then set each of the values to zero. I know this should be a simple double 'for' loop but what I can't figure out is how far the 'for' loop for the rows should go since the length is unknown. Anyone have any ideas? Thanks for your help in advance.
Nick

I am not sure i got your question properly...but i guess what you need to do is to pass the size of the rows also to the function....arrays don't know there sizes...so u need to pass that or take a global constant that can be used anywhere

I hope this help.

``````#include <iostream>
using namespace std;

#define gridSize 5

void resetGrid(int grid[][gridSize])
{

for(int i = 0;i < gridSize; i++)
{
for(int j = 0; j < gridSize; j++)
{
grid[i][j] = 0;
}
}

}

int main()
{
int myGrid[gridSize][gridSize];

for(int i = 0;i < gridSize; i++)
{
for(int j = 0; j < gridSize; j++)
{
myGrid[i][j] = 5;
}
}

cout << "Before reset:\n\n";

for(int i = 0;i < gridSize; i++)
{
for(int j = 0; j < gridSize; j++)
{
cout << myGrid[i][j] << " ";
}

cout << endl;
}

resetGrid(myGrid);

cout << "After reset:\n\n";

for(int i = 0;i < gridSize; i++)
{
for(int j = 0; j < gridSize; j++)
{
cout << myGrid[i][j] << " ";
}

cout << endl;
}

cout << endl;
return (0);
}``````

here is the output

``````Before reset:

5 5 5 5 5
5 5 5 5 5
5 5 5 5 5
5 5 5 5 5
5 5 5 5 5
After reset:

0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0``````

good luck!,

-r

Thank you,
That did help a lot!
Nick

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