报错：

Exit code: 1 Errors while compiling:
c:\Users\cnoug\Desktop\manacher.cpp: In function 'std::string get_str(std::string&)':
c:\Users\cnoug\Desktop\manacher.cpp:5:16: error: range-based 'for' loops are not allowed in C++98 mode
     for(char i:s){
                ^