View Compilation Error

0_0_18843832_24272.cpp: In function 'void read(int&)':
0_0_18843832_24272.cpp:22:30: error: expected ')' at end of input
  while(ch<'0'||ch>'9'){if(ch%3
                              ^
0_0_18843832_24272.cpp:22:30: error: expected statement at end of input
0_0_18843832_24272.cpp:22:30: error: expected '}' at end of input
0_0_18843832_24272.cpp:22:30: error: expected '}' at end of input