Notice that unlike the c-string versions ofistream::getline, thesestringversions are implemented as global functions instead of members of the stream class. Parameters is istreamobject on which the extraction operation is performed. str stringobject where the extracted content is stored. delim The ...
(std::stringline;std::getline(input, line);)sum+=std::stoi(line);std::cout<<"\nThe sum is "<<sum<<".\n\n";// use separator to read parts of the linestd::istringstreaminput2;input2.str("a;b;c;d");for(std::stringline;std::getline(input2, line,';');)std::cout<<line...
get和getline读取的结果都是C/C++类型的字符串,有时为了读取其他类型的数据(e.g. int, double),我们通常会结合流处理的方式完成类型转换(流处理可以看作是C++类型转换的通杀法:万物转stream,stream转万物)。 但是,当使用流处理读到行尾时,它并不会主动跳转到下一行!如下面的代码示例:当读出123后,流指针还是在...
下个可用字符c是以Traits::eq(c, delim)确定的分隔符。提取该分隔符(与basic_istream::get()不同)并计入gcount(),但不存储它。 count非正,或者已经提取了count-1个字符(此时会调用setstate(failbit))。 如果函数没有提取字符,那么在调用setstate()前就会在局部错误状态中设置failbit。
getline 的第二个参数需要是一个字符串: http ://www.cplusplus.com/reference/string/string/getline/我认为你试图实现的是:ifstream fruitFile; fruitFile.open("fruit.txt"); int line = 0; fruitFile >> line fruitFile.close(); 原文由 e-dschungel 发布,翻译遵循 CC BY-SA 3.0 许可协议 有...
infile.getline(a,3,'c'); cout<
the next available character c is the delimiter, as determined by Traits::eq(c, delim). The delimiter is extracted (unlike basic_istream::get()) and counted towards gcount(), but is not stored. count is non-positive, or count - 1 characters have been extracted (setstate(failbit) is...
cppreference对于大多数容器建议是这样的（以vector为例）Correctly usingreserve()can prevent unnecessary ...
问getline(cin，string)即使使用cin.ignore()也不起作用EN在C++中，cin是一个头文件iostream中的标准...
1 #include<iostream> 2 using namespace std; 3 4 int main(){ 5 char c; 6 wh... 蠢材少年 0 12437 C++ 中的 cin/cin.get()/cin.getline()/getline/getchar() 2018-11-28 23:41 − 在C++中有关从终端中输入数据的函数的理解一直比较模糊,写在这里面来分享给大家,并且方便自己以后查阅。