Increase value of byte array contents

Question

I wan't to be able to increase the value of content in my byte array.

For example if in my array I have got the value 1100001 what is an effective way of incrementing this value so that the contents of the array would show 1100010 .

I thought that it would be something like the following but it doesn't seem to work.

ByteArray[i] = ByteArray[i]++;

Thanks in advance

Answer 1

ByteArray[i] = ByteArray[i]++;

This is equivalent to:

byte temp = ByteArray[i];
ByteArray[i]++;
ByteArray[i] = temp;

In other words, you're increasing the value, then replacing it with the old value.

What you want is either

ByteArray[i]++;

or

ByteArray[i] = ByteArray[i] + 1;

Answer 2

x++ returns the original value of x .
You're then assigning the original value back to the array slot.

Answer 3

You should read into increment operators, there is ++x and x++ . Both increment, but ++x returns x+1, while x++ returns x.

This in your case, you set ByteArray[i] to ByteArray[i], the increment is impatiently overwritten.

Use ByteArray[i]++; instead.

And whenever you use the return of such an increment, think about which variant you use.