View Compilation Error

0_0_25912643_23594.cpp: In function 'int main()':
0_0_25912643_23594.cpp:31:14: error: too many arguments to function 'void getnext()'
   getnext(str);
              ^
0_0_25912643_23594.cpp:9:6: note: declared here
 void getnext()
      ^