为什么我会收到将字符串文字转换为char *的编译器警告,这不好吗? [英] Why do I get a compiler warning for converting a string literal to a char*, is it bad?
问题描述
所以编译器告诉我这是从字符串文字到char *的不推荐使用的转换:
So the compiler tells me this is a deprecated conversion from a string-literal to char*:
char* myString = "i like declaring strings like this";
我应该为此担心吗?这是错误的方法吗?
Should I be worried about this? Is this the wrong way to do this?
我需要将 myString
传递给接受<$的函数c $ c> char * ,我应该在没有这种转换的情况下正确初始化 char *
吗?
I need to pass myString
to a function that accepts a char*
, who should I properly initialize the char*
without this conversion?
推荐答案
它甚至不应该编译。如果需要将其传递给函数,以确保不会更改需要使用const cast的字符串,则其正确用法之一是:
It shouldn't even compile. If you need to pass it to function that you are sure won't change the string you need to use const cast, its one of its correct uses:
functionName(const_cast<char *>("something"));
或者,如果您不希望使用const强制转换,则可以将字符串复制到堆栈中: / p>
Or if you don't want the const cast, you can copy the string to the stack:
char str[] = "something";
functionName(str);
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