Webs是字符类型，而“string”是字符串类型， 要么写成char s[] = "string";要么写成char *s = "string"; WebJul 28, 2009 · const char *s = "Hello, World!"; std::string str (s); Note that this construct deep copies the character list at s and s should not be nullptr, or else behavior is undefined. Share Improve this answer Follow edited Dec 13, 2024 at 15:35 Serid 322 6 13 answered Jul 28, 2009 at 17:57 Jesse Beder 32.7k 21 108 145 7 what will happen if it is?

c++ - convert a char* to std::string - Stack Overflow

WebNov 9, 2009 · In C, one can use a string literal in a declaration like this: char s[] = "hello"; or like this: char *s = "hello"; So what is the difference? I want to know what actually happens in terms of s... Stack Overflow memory care facilities in yakima wa

char *s和char s[] - 知乎 - 知乎专栏

WebAug 3, 2024 · str2num() contains a call to eval(), which means that if your string has the same form as an array (e.g. with semicolons) then it is simply executed and the resulting array is returned.The problems with str2num() are that it doesn’t support cell arrays, and that because it uses an eval() function, wierd things can happen if your string includes a … Web微信原文你知道char *s和char s[]的区别吗？在一个夜深人静的晚上，有一个读者给我发了一个C语言题目。他问我，发哥，帮我看看这个代码有什么问题。我看了代码之后，心里一阵恐慌。我自认为我不是C语言高手。但是… Webstr1 这个类型是 char * 。它是一个指针，这个指针指向一个字符串。 str2 这个类型是 char [] 。它是一个数组，他代表了这堆内存空间。 “hello”字符串在内存中是这样存放的 memory care facilities in wisconsin