int main()
{
cout << "Welcome to your personal seat booking program." << endl;
cout << "Please follow the instructions to book your seat." << endl << endl;
cout << "Would you like a seat by the window? (true/false)" << endl;
cin >> userInputWindow;
if (userInputWindow = true)
{
}
else if (userInputWindow = false)
{
}
cout << "Would you like a seat with a table? (true/false)" << endl;
cin >> userInputTable;
if (userInputTable = true)
{
}
else if (userInputTable = false)
{
}
cout << "Would you like to be seated in First Class? (true/false)" << endl;
cin >> userInputClass;
if (userInputClass = true)
{
}
else if (userInputClass = false)
{
}
cout << "Do you need Ease-Of-Access seating? (true/false)" << endl;
cin >> userInputAccess;
if (userInputAccess = true)
{
}
else if (userInputAccess = false)
{
}
cout << "Do you need a forward facing seat? (true/false)" << endl;
cin >> userInputForward;
if (userInputForward = true)
{
}
else if (userInputForward = false)
{
}
当我运行它时，它会要求我输入第一个cin语句，但是跳过脚本的其余部分，甚至跳过我最后的system("PAUSE")。有什么理由吗？我很茫然，但我对编程非常陌生，并且遇到了困难。
谢谢！
答案 0 :(得分：0)
发生的事情是，在第一次选择if和else if，因为if if和if else内部没有任何内容，程序将终止，无论用户输入true还是false。什么选择if和else if是否就像拦截一样，你是左转还是右转（选择转到第一个if，或者第二个if else），并继续前进直到道路结束（程序终止）。因此，当程序结束时没有解释，因为没有需要解释的语法错误。 我假设您希望程序在用户输入“true”时提出问题。
http://www.tutorialspoint.com/cplusplus/cpp_if_else_statement.htm
int main()
{
cout << "Welcome to your personal seat booking program." << endl;
cout << "Please follow the instructions to book your seat." << endl << endl;
cout << "Would you like a seat by the window? (true/false)" << endl;
cin >> userInputWindow;
if (userInputWindow == true)
{
cout << "Would you like a seat with a table? (true/false)" << endl;
cin >> userInputTable;
if (userInputTable == true)
{
cout << "Would you like to be seated in First Class? (true/false)" << endl;
cin >> userInputClass;
if (userInputClass == true)
{
cout << "Do you need Ease-Of-Access seating? (true/false)" << endl;
cin >> userInputAccess;
if (userInputAccess == true)
{
cout << "Do you need a forward facing seat? (true/false)" << endl;
cin >> userInputForward;
if (userInputForward == true)
{
cout << "Program terminated";
}
else if (userInputForward == false)
{
}
}
else if (userInputAccess == false)
{
}
}
else if (userInputClass == false)
{
}
}
else if (userInputTable == false)
{
}
}
else if (userInputWindow == false)
{
}
如果您继续输入true，这将使程序继续运行，不知道这是否是您正在寻找的。