Question

得到以下代码，给出了预期＆＃39;

的第一个错误

试图获取并打印学生数据。不确定我是否需要使这些方法像返回类型或其他东西。欢迎任何建议，谢谢。

namespace studentInfo
{
    class Program
    {
        static void Main(string[] args)
        {
            getUserInformation();
            printStudentDetails(string firstName, string lastName, string birthday);
        }

        static void getUserInformation()
        {
            Console.WriteLine("Enter the student's first name: ");
            string firstName = Console.ReadLine();
            Console.WriteLine("Enter the student's last name");
            string lastName = Console.ReadLine();
            Console.WriteLine("Enter your bithdate");
            //DateTime birthdate = Convert.ToDateTime(Console.ReadLine());
            string birthday = Console.ReadLine();

        }

        static void printStudentDetails(string firstName, string lastName, string birthday)
        {
            Console.WriteLine("{0} {1} was born on: {2}", firstName, lastName, birthday);
            Console.ReadLine();
        }
    }
}

Answer 1

您正在调用方法：

#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>

int main(int argc, char *argv[]){

  QApplication app(argc, argv);

  QWidget *window = new QWidget;
  window->setWindowTitle("select your age");


  QSlider *slider = new QSlider(Qt::Horizontal);
  QSpinBox *spin = new QSpinBox;
  slider->setRange(0, 130);
  spin->setRange(0, 130);

  QObject::connect( spin, SIGNAL(valueChanged(int)), slider, SLOT(setValue(int)) );
  QObject::connect( slider, SIGNAL(valueChanged(int)), spin, SLOT(setValue(int)) );

  spin->setValue(30);

  QHBoxLayout *layout = new QHBoxLayout;

  layout->addWidget(spin);
  layout->addWidget(slider);
  window->setLayout(layout);

  window->show();

  return app.exec();
}

应该是：

 printStudentDetails(string firstName, string lastName, string birthday);

在将vars传递给方法之前，您还必须定义vars，firstName，lastName，birthday。

Answer 2

你做错了队友！

您只需要变量来调用方法..您不需要其数据类型。

所以应该是这样的： -

printStudentDetails(firstName, lastName, birthday);

如果你想使用像这样的变量，那么将它们全局声明为： -

public static dynamic firstName;
    public static dynamic lastName;
    public static dynamic birthday;

static void Main(string[] args)
{

    getUserInformation();
    printStudentDetails(firstName, lastName, birthday);
}

static void getUserInformation()
{
    Console.WriteLine("Enter the student's first name: ");
    firstName = Console.ReadLine();
    Console.WriteLine("Enter the student's last name");
    lastName = Console.ReadLine();
    Console.WriteLine("Enter your bithdate");
    birthday = Console.ReadLine();

}

static void printStudentDetails(string firstName, string lastName, string birthday)
{
    Console.WriteLine("{0} {1} was born on: {2}", firstName, lastName, birthday);
    Console.ReadLine();
}

方法}预期

2 个答案: