我用gcc编译
int getdata(void)
{
   int c;
   gotoxy(2,4);
   do
     {
       c=getchar();
       if(c>='0'&&c<='9')
         {
           putchar(c);
         }
       if(c=='\b'&&wherex()>2)
         {
           putchar(c);
           putchar(0x20);
           putchar(c);
         }
      }while(!(c==27||c=='+'||c=='-'||c=='*'||c=='/'||c=='\n'));
   operator=c;
   if(c!=27&&c!='\n')
     putchar(c);
   return 0;
}
出现如下错误
calculator.c:2:19: error: curses.h: No such file or directory
calculator.c: In function ‘getdata’:
calculator.c:26: warning: implicit declaration of function ‘gotoxy’
calculator.c:34: warning: implicit declaration of function ‘wherex’
不知如何解决
麻烦了，谢谢

非常感谢！