Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Why does neither gcc or clang generate an error when I try to compile code containing the following two lines?
int palindrome(char s[]){
char s2[strlen(s)];
I thought in such an instance you would have to dynamically allocate memory to s2.
GCC has an extension for this behavior, and it’s also standard in C99, known as variable length arrays.
http://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
Clang supports it due to GCC C and C99: http://clang.llvm.org/compatibility.html#vla