View Compilation Error

0_0_37747361_10488.cpp: In function 'int main()':
0_0_37747361_10488.cpp:24:2: error: expected ',' or ';' before 'int'
  int ans=0;
  ^
0_0_37747361_10488.cpp:28:4: error: 'ans' was not declared in this scope
    ans=mid;
    ^
0_0_37747361_10488.cpp:35:8: error: 'ans' was not declared in this scope
  cout<<ans<<endl;  
        ^