View Compilation Error

0_0_19713721_10395.cpp:1:21: error: 'tt' does not name a type
                     tt=1;
                     ^
0_0_19713721_10395.cpp:2:21: error: 'l' does not name a type
                     l--;
                     ^
0_0_19713721_10395.cpp:3:21: error: expected unqualified-id before 'while'
                     while (tt<=r)
                     ^