自己写一个简单的C++单词扫描程序。[11]

            case '&':
                strtoken = strtoken + ch;
                ch = buffer[++lnscptr];
                if(ch=='&')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"逻辑与");
                 maketl(linecount,strtoken,"逻辑与");
                }
                else
                {
                 print(linecount,strtoken,strgrdline,"位与运算符");
                 maketl(linecount,strtoken,"位与运算符");
                }
                break;

            case '|':
                strtoken = strtoken + ch;
                ch = buffer[++lnscptr];
                if(ch=='|')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"逻辑或");
                 maketl(linecount,strtoken,"逻辑或");
                }
                else
                {
                 print(linecount,strtoken,strgrdline,"位或运算符");
                 maketl(linecount,strtoken,"位或运算符");
                }
                break;

            case '^':
                strtoken = strtoken + ch;
                ch = buffer[++lnscptr];
                print(linecount,strtoken,strgrdline,"异或运算符");
                maketl(linecount,strtoken,"异或运算符");
                break;