View Compilation Error

0_0_14953495_23183.cpp: In function 'int readin()':
0_0_14953495_23183.cpp:16:9: error: redeclaration of 'int answer'
     int answer = 0;
         ^
0_0_14953495_23183.cpp:13:6: note: 'int answer' previously declared here
  int answer;
      ^