运行 ID: 30400

Main.cc: In function ‘int main()’:
Main.cc:7:9: error: conflicting declaration ‘int a [n]’
  int a[n];
         ^
Main.cc:5:8: note: previous declaration as ‘int a’
  int n,a=0,b=0,c=0,d=0;
        ^
Main.cc:9:11: error: invalid types ‘int[int]’ for array subscript
   cin>>a[i];
           ^
Main.cc:12:9: error: invalid types ‘int[int]’ for array subscript
   if(a[i]>=0&&a[i]<=18) a++; 
         ^
Main.cc:12:18: error: invalid types ‘int[int]’ for array subscript
   if(a[i]>=0&&a[i]<=18) a++; 
                  ^
Main.cc:13:14: error: invalid types ‘int[int]’ for array subscript
   else if(a[i]>=19&&a[i]<=35) b++;
              ^
Main.cc:13:24: error: invalid types ‘int[int]’ for array subscript
   else if(a[i]>=19&&a[i]<=35) b++;
                        ^
Main.cc:14:14: error: invalid types ‘int[int]’ for array subscript
   else if(a[i]>=36&&a[i]<=60) c++;
              ^
Main.cc:14:24: error: invalid types ‘int[int]’ for array subscript
   else if(a[i]>=36&&a[i]<=60) c++;
                        ^