题
我正在开发一个简单的项目,但我怎么可以做一个永远重复一个如果功能(这就像一个命令行)?感谢。
我的代码是这样的:
Console.Write("> ");
var Command = Console.ReadLine();
if (Command == "About") {
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
}
解决方案
string Command;
while (true) {
Command = Console.ReadLine();
if (Command == "About") {
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
}
}
其他提示
以任何机会你的意思是:
while( !(!(!(( (true != false) && (false != true) ) || ( (true == true) || (false == false) )))) == false )
{
Console.Write("> ");
if ("About" == Console.ReadLine())
{
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
}
}
您的问题还不清楚,但你可能想要做这样的事情:
while(true) { //Loop forever
string command = Console.ReadLine();
if (command.Equals("Exit", StringComparison.OrdinalIgnoreCase))
break; //Get out of the infinite loop
else if (command.Equals("About", StringComparison.OrdinalIgnoreCase)) {A
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
}
//...
}
我不认为你的问题非常清晰。但这里是企图:)
while (true) {
if (i ==j ) {
// whatever
}
}
您说这个?
while(true) {
if( ...) {
}
}
PS:这是我最喜欢的预处理程序的黑客之一。在C#不工作,虽然,只有C / C ++。
#define ever (;;)
for ever {
//do stuff
}
我觉得你只是想(至少)一个出口点的简单while
循环。
while(true)
{
Console.Write("> ");
var command = Console.ReadLine();
if (command == "about") {
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
} else if (command == "exit") {
break; // Exit loop
}
}
您不能自行使用“如果”语句,因为当它到达后,你的程序将继续在你的代码执行下一条语句。我想你追求的是一个“而”语句始终计算为真。
e.g。
string Command;
while(true)
{
Command = Console.ReadLine();
if (Command == "About")
{
Console.WriteLine("This Operational System was build with Cosmos using C#");
Console.WriteLine("Emerald OS v0.01");
}
}
如果有异常抛出这个循环将是不可避免的,或者你执行break语句(或其他等值是在C#中,我是一个Java的家伙 - 不要恨我)
。不隶属于 StackOverflow