---

Lỗi biên dịch:

Main.cc: In function ‘int main()’:
Main.cc:9:10: error: expected unqualified-id before string constant
     char "?"="2",a="3",b="4";
          ^~~
Main.cc:15:26: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive]
             if(strcmp(s[i],s[i+1])<0)
                       ~~~^
In file included from Main.cc:2:0:
/usr/include/string.h:136:12: note:   initializing argument 1 of ‘int strcmp(const char*, const char*)’
 extern int strcmp (const char *__s1, const char *__s2)
            ^~~~~~
Main.cc:15:33: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive]
             if(strcmp(s[i],s[i+1])<0)
                            ~~~~~^
In file included from Main.cc:2:0:
/usr/include/string.h:136:12: note:   initializing argument 2 of ‘int strcmp(const char*, const char*)’
 extern int strcmp (const char *__s1, const char *__s2)
            ^~~~~~
Main.cc:18:30: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive]
      tong = tong + strcmp(s[i],s[i+1]);
                           ~~~^
In file included from Main.cc:2:0:
/usr/include/string.h:136:12: note:   initializing argument 1 of ‘int strcmp(const char*, const char*)’
 extern int strcmp (const char *__s1, const char *__s2)
            ^~~~~~
Main.cc:18:37: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive]
      tong = tong + strcmp(s[i],s[i+1]);
                                ~~~~~^
In file included from Main.cc:2:0:
/usr/include/string.h:136:12: note:   initializing argument 2 of ‘int strcmp(const char*, const char*)’
 extern int strcmp (const char *__s1, const char *__s2)
            ^~~~~~
Main.cc:8:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~