View Compilation Error

0_0_19664655_12009.cpp: In function 'int KMP()':
0_0_19664655_12009.cpp:28:18: error: too many arguments to function 'void get_nextval()'
     get_nextval(T);
                  ^
0_0_19664655_12009.cpp:7:6: note: declared here
 void get_nextval()
      ^