我正在尝试为Linux创建一个命令行邮件应用程序(尽管我在Xcode上进行开发会导致VM为我的计算机使用很多功能)。我在主菜单中有两个选项(用户输入要选择的数字)。我在每次输入后都使用它,无论是简单的can还是get line(can,stringName):
p <- ggplot(df, mapping = aes(x, Points, colour = Event, text = paste("Person: ", Person,
"\nEvent: ", Event))) +
theme(legend.position='none')+
geom_point(shape = 4)
ggplotly(p) %>%
layout(hovermode = "x", hoverdistance = 1)
这就是为什么我对自己的输入感到各种各样奇怪的行为感到困惑。这是我的代码和示例输出(end函数只是一个需要花费<< endl;的for循环):
代码
void clearCin() {
cin.clear();
cin.ignore(INT_MAX, '\n');
}
输出
bool stdEmail() {
string to, cc, bcc, subject, message;
cout << "When entering email addresses, seperate multiple email addresses with a space";
endl(2);
cout << "To: ";
getline(cin, to);
clearCin();
cout << "cc: ";
getline(cin, cc);
clearCin();
cout << "bcc: ";
getline(cin, bcc);
clearCin();
endl(1);
cout << "Subject: ";
getline(cin, subject);
clearCin();
endl(1);
cout << "Now enter your message, when you're finished, type a period on a new line";
endl(2);
ofstream file;
file.open("newMessage.txt", fstream::trunc);
bool repeat = true;
while (repeat) {
getline(cin, message);
clearCin();
if (message == ".") {
repeat = false;
} else {
file << message << endl;
}
}
file.close();
return true;
}
这是newMessage.txt中显示的内容:
这是示例消息
答案 0 :(得分:0)
cin.ignore(INT_MAX, '\n');
丢弃换行符,并且getline在读取换行符时完成,因此您必须在输入消息后将两次按Enter键以使getline读取它,并且必须在输入“'”后按Enter键两次。结束循环。