/in/foo.c:1:1: warning: data definition has no type or storage class
 a = int(input('请输入被除数：'))
 ^
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
/in/foo.c:1:5: error: expected expression before 'int'
 a = int(input('请输入被除数：'))
     ^~~
/in/foo.c:1:15: warning: character constant too long for its type
 a = int(input('请输入被除数：'))
               ^~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:2:15: warning: character constant too long for its type
 b = int(input('请输入除数：'))
               ^~~~~~~~~~~~~~~~~~~~