我有3个名为Starter,Pizza和Dessert的类,每当创建一个对象时,它会接受可变数量的字符串输入,
//pizza takes 2 inputs
Pizza p("margarita","large size");
//starter takes 3 inputs
Starter s("ribs","bbq sauce","small size");
但我想使用add()函数创建一个 new 对象,该函数接受一个字符串并将其与类匹配以创建一个新对象。例如
add(string type)
{
if(type == "Pizza")
{
Pizza *p = new Pizza();
}
else if(type == "Starter ")
{
Starter *p = new Starter ();
}
}
现在我的问题是,如何以用户友好的方式向类提供输入?通过用户友好,我认为用户可以在一行中编写类的所有输入,而不是使用cin来获取每一个输入。
说我们正在拿披萨,那就是我不想要的,
cout<<"What type of pizza";
cin>>*input* <<endl;
cout<<"What size";
cin>>*input* <<endl;
我想在一行中写下所有输入,如
输入“margarita”,“大”
答案 0 :(得分:2)
// Read complete string.
// Eg. margarita large
string order;
getline(cin, order);
// It automatically parses string based on space
istringstream is(order);
string meal, size;
is >> meal;
is >> size;
答案 1 :(得分:1)
归功于@MuratKarakus。只是扩展他的答案以支持这种类型的输入"margarita","large"
// Read complete string.
// Eg. margarita large
string order;
getline(cin, order);
std::replace( order.begin(), order.end(), ',', ' '); // this'll replace all ',' with space
// It automatically parses string based on space
istringstream is(order);
string meal, size;
is >> meal;
is >> size;
--------更新
下面的代码是支持"1/2 margarita 1/2 bbq delux", "large"
// Read complete string.
// Eg. margarita large
string order;
getline(cin, order);
std::replace( order.begin(), order.end(), ' ', '-'); // this'll replace all space with '-'
std::replace( order.begin(), order.end(), ',', ' '); // this'll replace all ',' with space
// It automatically parses string based on space
istringstream is(order);
string meal, size;
is >> meal;
std::replace( meal.begin(), meal.end(), '-', ' '); // this'll replace all '-' with space
is >> size;