Friday, June 20, 2008

Why atoi() is NOT Your Friend

atoi() is a hold-over of the bad times when people put junk such as strcpy() and gets() into libc.

It is unsuitable as it has no way of returning and error, e.g.
atoi("adhgsjgdas") = 0
Alas many people still use it.

Please, please use instead:
if(sscanf(str, "%d", &int_var) != 1) {
// handle the error!!!