How to check if all the values of an array are equal to 0?

Question

The context of the program is a game involving pegs and discs. The user inputs the amount of pegs (max of 20) and the amount of discs on each peg (max of 10). Two players go

Answer 1

if(array[i] = 0)

That doesn't compare array[i] with 0, it assigns 0 to array[i]. You want array[i] == 0.

if(array[i] == 0)
{
    return true;
}
else
{
    return false;
}

The second issue is that you only check the first element, then return based on that. You should check every element to ensure they are non-zero:

for (int i = 0; i < size; i++)
{
    if(array[i] != 0) {
        return false;
    }
}

Finally, you don't handle the case that size is 0. In that case, you should return true.

bool checkPegs(int array[], int size)
{
    for (int i = 0; i < size; i++)
    {
        if(array[i] != 0) {
            return false;
        }
    }

    return true;
}