2013年6月5日 · Apart from that, your issue is that strrev() reverses the string in place, so the two strings will always compare equal (since you're effectively comparing the reversed string with itself). What you have to do is: superfluously inefficient way: create a copy of the string, strrev() that, then strcmp() the original and the copy.

Any ideas on why when I try to compile this code to check if a line from the file atadata I get the warning: warning: implicit declaration of function ‘strrev’ [-Wimplicit-function-declaration]...

2012年11月24日 · Reverse ASCII string, i.e. a 0-terminated array where every character fits in 1 char. (Or other non-multibyte character sets).

2016年1月20日 · A portable solution which still has your problem std::vector<char> ch1(x); (you then need to pass &ch[0] to strrev). Alternatively, use std::string , and your problem will go away. – Martin Bonner supports Monica

The function must: have only one argument, not use the built-in function strrev() or array_reverse(), and ...

2023年7月15日 · strrev() with binary numbers. 0. PHP > Dealing with numbers. Hot Network Questions Why are quotients so ...

2016年1月26日 · You never allocate memory for str or strrev. This is why it crashes; writing to uninitialized pointers invokes undefined behavior, often resulting in a seg fault. This is why it crashes; writing to uninitialized pointers invokes undefined behavior, often resulting in a seg fault.

2016年11月17日 · since the strrev() routine is so often used in interviews, this little bit is something I always look for. I don't hold it against anyone (if that's the worst problem the function had, I don't think there's much to worry about), but pointing it out it can spur further conversation which gives additional insight.

2021年2月14日 · I am unable to use strrev() function even after including string.h in Ubuntu 20.04. Compiler says undefined reference to strrev(), but strlen() and other functions work.

2015年5月5日 · How to check that a string WAS reversed using strrev() in PHP. 0. String reverse in another way. 40.