why strlen isn't working here????please help me

Question

https://code.sololearn.com/ca3a9a15445A

./Playground/file0.cpp: In function 'int main()':
./Playground/file0.cpp:13:16: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const char*'
13 | cout<<strlen(str)<<endl;
| ^~~
| |
| std::string {aka std::__cxx11::basic_string<char>}
In file included from ../Playground/++/10.2.0/cstring:42,
from ./Playground/file0.cpp:3:
../Playground/:384:35: note: initializing argument 1 of 'size_t strlen(const char*)'
384 | extern size_t strlen (const char *__s)
| ~~~~~~~~~~~~^~~

Answer 1

It's because *str* is of type std::string and strlen() works on C style strings ( char * or char[] )

Use str.length() to get desired results
https://code.sololearn.com/c1FwiNcRqTGs/?ref=app

Answer 2

Error what i am getting pasted in description...
Please look in to it and please help me

Answer 3

Arsenic thanks bro.....