Constantin Greubel <constantin.greubel@xxxxxxxxxxxxxxxxxxxxxx> writes: > I hope this is at least the correct address to ask such questions. > I have the following small programm, and I don't understand why the > number is feeded with ones from the right, but not with zeros. And the > next question would be: How can I manage it to get zeros, instead of > ones? Your question would be easier to understand if you showed the output of your program, and also showed the expected output. However, I suspect that the answer to your question is that doing a right shift of a variable with a signed type which happens to hold a negative value is implementation defined. If you want to reliably and portably do a right shift of a value with the high bit set, use 'unsigned int' instead of 'int'. Ian