View Compilation Error

0_0_18873496_11814.cpp: In function 'void Read()':
0_0_18873496_11814.cpp:12:5: error: 'ch' was not declared in this scope
     ch = getchar();
     ^
0_0_18873496_11814.cpp: At global scope:
0_0_18873496_11814.cpp:50:2: error: 'm' does not name a type
 }m
  ^