Webcin是istream类型对象。cin对象将标准输入看作字节流，cin对输入的解释方式取决于>>操作符后的参数数据类型，对于string类型，cin会将输入流中第一个非空白（空格、制表、换行等）字符和下一个空白字符之间的字节读取出来，存储到string对象中，因此会出现问题中所 … WebFeb 11, 2024 · cin 遇空格或换行，会停止识别，如果你打算输入的字符串中带1个或多个空格，则采用getline把停止识别的符号设置为‘\n’（即换行符），就能正确输入输出了。. 归零起步. string >,有两个重载版本： isrteam& getline (istream& is, string & str, char delim); istream& getline (istream ...
WebIn some implementations of the standard library, when you include iostream you get parts of string, but it's always a good idea to include string yourself. Even if not including string is working for you today, in the next release of your compiler (or if you switch compilers) it might not, so include what you need and you'll live a simpler life. WebApr 20, 2024 · C++用cin输入的时候会忽略空格以后的字符，比如 char a[100]; cin>>a; C++用cin输入的时候会忽略空格以后的字符，输入”hello world”输出的是”hello”； 如果用循环输入 for(int i=0;i>a[i]; } 这样输入100个数吗？或者定义一个n，提前知道字符有多长，让i immigration photos 1880
如何用cin输入string却不会因为空格而接受不到后面的字符？
Webcin >> firstName; // get user input from the keyboard. cout << "Your name is: " << firstName; // Type your first name: John. // Your name is: John. However, cin considers a space (whitespace, tabs, etc) as a terminating character, which means that it can only display a single word (even if you type many words): Webcin.get()函数可以接收空格，遇回车结束输入。 #include using namespace std; int main() {chara[50]; cin.get(a,50); cout< WebFeb 25, 2024 · 如果cin.ignore()不给参数，则默认参数为cin.ignore(1,EOF)，即把EOF前的1个字符清掉，没有遇到EOF就清掉一个字符然后结束，会导致不正确的结果 6.getline getline(cin,a)getline遇到结束符时，会将结束符一并读入指定的string中，再将结束符替换为空字符，所以用getline较为安全 immigration physician certification