根据选择从列表中检索值。 [英] Retrieve the value from the list based on the selection.

问题描述

根据选择检索值。



示例：以下是示例列表



名称价值温度

A 1 S

B 2 D

C 3 W

D 4 E
E 5 F



我需要根据名称选择获取值（假设名称在下拉列表中）。

如果我从下拉菜单中选择C，我应该得到3个值对应它

如果我选择D，我应该得到4值

任何链接或帮助，以便它可以帮助将被赞赏



我尝试过：

Retrieve the value based on the selection.

Example : Below is the sample list

Name Value Temp
A 1 S
B 2 D
C 3 W
D 4 E
E 5 F

I need to get the value based on the Name selection(Suppose name is in the dropdown).
If i select C form the drop down,i should get the 3 value corrsponding to it
If i select D,i should get the 4 value
Any link or help so that it can help will be appreciated

What I have tried:

Retrieve the value based on the selection.

Example : Below is the sample  list

Name    Value  Temp
A         1     S
B	  2     D
C         3     W
D         4     E
E         5     F

I need to get the value based on the Name selection(Suppose name is in the dropdown).
If i select C form the drop down,i should get the 3 value corrsponding to it
If i select D,i should get the 4 value
Any link or help so that it can help will be appreciated

推荐答案

有几种方法可以实现它。

一个简单的方法是使用 std :: map< char，int =>< / char，> 来持有名称和值值（例如，参见 std :: map :: operator [] - cppreference.com [ ^ ]）。

There are several ways to implement it.
A simple approach would use a std::map<char, int=""></char,> for holding the Name and Value values (see, for instance std::map::operator[] - cppreference.com[^]).

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