View Compilation Error

0_0_17718521_18459.cpp: In function 'int startManacher()':
0_0_17718521_18459.cpp:28:22: error: too many arguments to function 'void change()'
     change(str, exstr);
                      ^
0_0_17718521_18459.cpp:11:6: note: declared here
 void change() {
      ^