Mã chấm: 271439

Main.cc: In function ‘int main()’:
Main.cc:10:26: warning: too many arguments for format [-Wformat-extra-args]
     printf("Nhập n:", n);
                          ^
Main.cc:11:28: error: expected primary-expression before ‘)’ token
     printf("Chuỗi là:", );
                            ^
Main.cc:12:18: warning: format ‘%f’ expects a matching ‘double’ argument [-Wformat=]
     printf("%.2f")
                  ^
Main.cc:13:5: error: expected ‘;’ before ‘return’
     return 0;
     ^~~~~~
Main.cc:8:11: warning: unused variable ‘t’ [-Wunused-variable]
     int n,t;
           ^
Main.cc:9:10: warning: unused variable ‘A’ [-Wunused-variable]
     char A,B,C,D;
          ^
Main.cc:9:12: warning: unused variable ‘B’ [-Wunused-variable]
     char A,B,C,D;
            ^
Main.cc:9:14: warning: unused variable ‘C’ [-Wunused-variable]
     char A,B,C,D;
              ^
Main.cc:9:16: warning: unused variable ‘D’ [-Wunused-variable]
     char A,B,C,D;
                ^