View Compilation Error

0_0_39691720_21699.cpp:16:18: error: missing terminating ' character
   16 |     {if('ch == '-') f = -1;ch = getchar();}
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~
0_0_39691720_21699.cpp: In function 'int read()':
0_0_39691720_21699.cpp:17:9: error: expected primary-expression before 'while'
   17 |         while('0'<=ch && ch <= '9'){
      |         ^~~~~
0_0_39691720_21699.cpp:20:9: error: expected primary-expression before 'return'
   20 |         return x*f;
      |         ^~~~~~
0_0_39691720_21699.cpp:19:29: error: expected ')' before 'return'
   19 |             ch = getchar();}
      |                             ^
      |                             )
   20 |         return x*f;
      |         ~~~~~~               
0_0_39691720_21699.cpp:16:8: note: to match this '('
   16 |     {if('ch == '-') f = -1;ch = getchar();}
      |        ^