nested for loops and running average

gistfile1.txt

for ( y = 0; y < rows ; y++)
{
	for ( x = 0; x < cols ; x++)
	{
		number[y][x] = (rand() % 10001 + 5);
		if(hi < number[y][x]) hi= number[y][x];
		count++;
		avg-=avg/(float)count;
		avg+=number[y][x]/(float)count;
	}
}