如何使用 C++ 中的结构制作 map？

Question

what I am trying to do is use C++ struct to make a simple map.

for example,

if I have

struct Map { char name; int age };
Map MapObj[] = { {'charles', 10}, {'kate', 20}, {'nate', 10} } 

how can I access to kate's age using the map? I tried MapjObj['kate'] but it does not work. How can I access the age using the name?

Answer 1

You can use the <algorithm> facilities C++ offers, and specifically - std::find ; something like:

auto pos = std::find(
    std::begin(MapOjb), 
    std::end(MapObj),
    [](const Map& m) { return m == "kate"}
);

But note that:

1. name must be an std::string or a char * (in the latter case, you would use strcmp() , not plain string comparison).
2. Map and MapObj are incredibly poor choices for names here...

Pass it the beginning and the end of the array you created, as well as a lambda function.