While my program hangs

I have a function which encrypts a 256 * 256 image and processes the matrix row by row..the problem i have is that the execution hangs at the 70th line and there is no error in the program .. there an explanation please?

[KSSV]

With out code we cannot comment why there is a hang..you need to post the code and explain us your problem.

[Walter Roberson]

No, do not post the code.

Due to the laws of the USA, we cannot discuss encryption.

If you could replicate the problem without encryption algorithms, then we could assist with that.