Hi there! I'm working with strcat but I have some problems. I want to make a function to read a line from a file. At the begining, I don't know how long the line is, because of that, I want to start with a small array and read in small slices. These slices I will attach to a final line containing the line of the text. If I use an statically reserved array 'aux', this works properly. But if I use calloc to reserve memory for that array it strcat doesn't work. Anybody knows WHY???