int main(){
    bool flag=1;
    int q;
    double a;
    vector<double>p;
    char b;//运算符
    vector<char>h;
    cout<<"请务必以等于号结尾"<<endl;
    cout<<"输入q结束本程序"<<endl;
while (flag=1){
    while (cin>>a>>b){
        break;}
        p.push_back(a);//p数组储存数字
        h.push_back(b);//h数组存储运算符
        if (b=='=')
        break;}
                    if (p[0]==q)
        break;
        else
        continue;