C# 中的构造函数重载
csharpprogrammingserver side programming
当在同一个类中定义多个同名的构造函数时，如果每个构造函数的参数不同，则它们被称为重载。
让我们看一个例子来学习如何在 C# 中使用构造函数重载。
在示例中，我们有两个科目和一个学生姓名的字符串声明。
private double SubjectOne; private double SubjectTwo; string StudentName;
我们显示了三个学生在不同科目的成绩。对于我们的示例，为了显示构造函数重载，仅显示学生 3rd 的姓名。
Student s1 = new Student();
Student s2 = new Student(90);
Student s3 = new Student("Amit",88, 60);
您可以尝试运行以下代码，在 C# 中实现构造函数重载。
示例
using System;
namespace Program {
class Student {
private double SubjectOne;
private double SubjectTwo;
string StudentName;
public Student() {
this.SubjectOne = 80;
}
public Student(double SubjectOne) {
this.SubjectOne = SubjectOne;
}
public Student(string StudentName, double SubjectOne, double SubjectTwo) {
this.SubjectOne = SubjectOne;
this.SubjectTwo = SubjectTwo;
this.StudentName = StudentName;
}
public double GetSubjectOneMarks() {
return this.SubjectOne;
}
public double GetSubjectTwoMarks() {
return this.SubjectTwo;
}
public string GetStudentName() {
return this.StudentName;
}
}
class Program {
static void Main(string[] args) {
Student s1 = new Student();
Student s2 = new Student(90);
Student s3 = new Student("Amit",88, 60);
Console.WriteLine("One");
Console.WriteLine("Subject One Marks: {0}", s1.GetSubjectOneMarks());
Console.WriteLine();
Console.WriteLine("Second");
Console.WriteLine("Subject One Marks: {0}", s2.GetSubjectOneMarks());
Console.WriteLine();
Console.WriteLine("Third");
Console.WriteLine("Student name: {0}", s3.GetStudentName());
Console.WriteLine("Subject One Marks: {0}", s3.GetSubjectOneMarks());
Console.WriteLine("Subject Two Marks: {0}", s3.GetSubjectTwoMarks());
Console.ReadKey();
}
}
}
输出
One Subject One Marks: 80 Second Subject One Marks: 90 Third Student name: Amit Subject One Marks: 88 Subject Two Marks: 60
