View Compilation Error

0_0_33353163_12643.cpp: In function 'int main()':
0_0_33353163_12643.cpp:49:65: error: expected statement at end of input
     while (scanf ("%I64d%I64d%I64d%I64d", &p, &q, &e, &l) != EOF)
                                                                 ^
0_0_33353163_12643.cpp:49:65: error: expected '}' at end of input