View Compilation Error

0_0_39114233_11901.cpp:87:1: error: 'sdhjbcsdjhcbsd' does not name a type
   87 | sdhjbcsdjhcbsd
      | ^~~~~~~~~~~~~~
0_0_39114233_11901.cpp: In function 'int main()':
0_0_39114233_11901.cpp:134:17: error: 'change3' was not declared in this scope
  134 |         if(!op) change3(1,n,1,a,b);
      |                 ^~~~~~~