What is the difference between (char)0 and '\0'? in C

Question

What is the difference between using (char)0 and \'\\0\' to denote the terminating null character in a character array?

Answer 1

Zero can mean a lot of different things in C. You should use the null character '\0', because then there can be no confusion over that your intention is string termination.

If you set a char to 0, that can mean null termination, but it can also mean that you are just using the char as an 8-bit integer for calculations, rather than as part of a string. This can be confused further if you are also using pointers in the same code and compare them against zero, which is then a null pointer.