将值分配给同一行上的多个声明 [英] Assigning values to multiple declarations on same line

问题描述

我正在创建变量

std::string str1,str2,str3,str4 = "Default";

但是变量没有Default值。如何为这种创建的变​​量赋值

however the variables do not have the Default value. How can I assign values to variables created this way

推荐答案

str4 有你想要的价值。你只是没有初始化其他人。使用：

str4 will have the value you're looking for. You just didn't initialize the others. Use:

std::string str1 = "Default", str2 = "Default", str3 = "Default", str4 = "Default";

或者，可能更好：

std::string str1 = "Default";
std::string str2 = "Default";
std::string str3 = "Default";
std::string str4 = "Default";

如果你担心这么多打字，你可以使用赋值而不是初始化： p>

If you're concerned about doing so much typing, you can use assignment instead of initialization:

std::string str1, str2, str3, str4;
str1 = str2 = str3 = str4 = "Default";

但是这有不同的语义，是（IMHO）有点蠢。

But that's got different semantics and is (IMHO) a bit hinky.

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