View Compilation Error

0_0_29264602_3589.cpp: In function 'int main()':
0_0_29264602_3589.cpp:21:9: error: expected ')' at end of input
  while (scanf
         ^
0_0_29264602_3589.cpp:21:9: error: expected statement at end of input
0_0_29264602_3589.cpp:21:9: error: expected '}' at end of input