自己写一个简单的C++单词扫描程序。[6]

            case '-':
                strtoken = strtoken + ch;
                ch = buffer[++lnscptr];
                if(ch=='=')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"-=运算符");
                 maketl(linecount,strtoken,"-=运算符");
                }
                else if(ch=='>')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"指针运算符");
                 maketl(linecount,strtoken,"指针运算符");
                }
                else if(ch=='-')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"递减运算符");
                 maketl(linecount,strtoken,"递减运算符");
                }
                else
                {
                 print(linecount,strtoken,strgrdline,"减号运算符");
                 maketl(linecount,strtoken,"减号运算符");
                }
                break;