View Compilation Error

0_0_37576773_6752.cpp: In function 'int main()':
0_0_37576773_6752.cpp:31:5: error: expected unqualified-id before 'case'
 int case=0;
     ^
0_0_37576773_6752.cpp:43:7: error: expected primary-expression before ';' token
 case++;
       ^
0_0_37576773_6752.cpp:43:1: error: case label '<expression error>' not within a switch statement
 case++;
 ^
0_0_37576773_6752.cpp:43:7: error: expected ':' before ';' token
 case++;
       ^
0_0_37576773_6752.cpp:57:48: error: expected primary-expression before 'case'
                 printf("Case %d is a tree.\n", case);
                                                ^
0_0_37576773_6752.cpp:59:52: error: expected primary-expression before 'case'
                 printf("Case %d is not a tree.\n", case);
                                                    ^