View Compilation Error

0_0_29505802_29067.cpp: In function 'int main()':
0_0_29505802_29067.cpp:13:14: error: 'ans' was not declared in this scope
         else ans=2;
              ^
0_0_29505802_29067.cpp:14:33: error: 'ans' was not declared in this scope
         printf("Case #%d: %d",i,ans);
                                 ^