The MS Calc works, but you can do it by hand, too. In binary, each position is worth twice the previous value. So, if you have a binary number "10110011", you can break it down like this: 128x 64x 32x 16x 8x 4x 2x 1x 1 0 1 1 0 0 1 1 128 + 32 + 16 + 2 + 1 = 179 Doing the reverse, "131" breaks down like this: 128x 64x 32x 16x 8x 4x 2x 1x 1 0 0 0 0 0 1 1 128 + 2 + 1 = 131 = 10000011 ------------------------------------------ When I was a kid, I used to pray every night for a new bicycle. Then I realized that the Lord, in his wisdom, didn't work that way. So I just stole one and asked him to forgive me. - Emo Phillips

Thanks!

Thanks! Loli10

The easiest way to find out would be to use the sizeof operator: int viSize1 = sizeof(ISInst1); int viSize2 = sizeof(InstPtr); ------------------------ Derek Waters derek@lj-oz.com

Thanks Mike - it makes sense! Loli10

Sort it first. Binary search expects a sorted array. It won't crash your program, but you will get wrong results for your search if the array is unsorted. Nish It's seven o'clock On the dot I'm in my drop top Cruisin' the streets - Oh yeah I got a real pretty, pretty little thing that's waiting for me

Told ya so...:laugh:

Jon Hulatt wrote: never start a sentence with the word "And". It's quite acceptable now, and often helps to improve the continuity of a thought process too lengthy or complex to express in a single, excessively verbose compound, complex sentence. A foolish consistency is the hobgoblin of simple minds.