What's the best way to do a backwards loop in C/C#/C++?

Question

I need to move backwards through an array, so I have code like this:

for (int i = myArray.Length - 1; i >= 0; i--)
{
    // Do something
    myArray[i] =          


        

Answer 1

I'd use the code in the original question, but if you really wanted to use foreach and have an integer index in C#:

foreach (int i in Enumerable.Range(0, myArray.Length).Reverse())
{
    myArray[i] = 42; 
}

Answer 2

I prefer a while loop. It's more clear to me than decrementing i in the condition of a for loop

int i = arrayLength;
while(i)
{
    i--;
    //do something with array[i]
}