C#综合练习附答案.pdf

一、选择题一、选择题 1. 下列程序所计算的数学式是下列程序所计算的数学式是() inta=0, i=2; while(i=0;j-) Console.Write (“00”, numsj)； Console.WriteLine(); 答案：答案：10 8 36 12 24 24 12 36 8 10 2、 class Fruit public string color; public string shape; public Fruit(string c, string s) color = c; shape = s; class Test public static void Main() Fruit Orange = new Fruit(“orange“, “round“); Console.WriteLine(“0,1“, Orange.color, Orange.shape); 答案：答案：orange, round 3、using System; class Point public int x,y; public Point(int x ,int y) this.x=x; this.y=y; class Test static void Main() Pointp=new Point(5,6); Console.WriteLine(“x=0“,p.x); Console.WriteLine(“y=0“,p.y); 答案：答案：x=5 y=6 4、class Decon1 public Decon1( ) Console.WriteLine(“调用构造函数调用构造函数 Decon1”); Decon1( ) Console.WriteLine(“调用析构函数调用析构函数 Decon1”); class Decon2 public Decon2( ) Console.WriteLine(“调用构造函数调用构造函数 Decon2”); Decon2( ) Console.WriteLine(“调用析构函数调用析构函数 Decon2”); class Test public static void Main() Decon1dec1=new Decon1( ); Decon2dec2=new Decon2( ); 答案：答案：调用构造函数调用构造函数 Decon1 调用构造函数调用构造函数 Decon2 5、usingSystem; class Test public void myMeth( ) int j; for(j=1;j=5) j=j*2; Console.WriteLine(j ); return; else j=j*3; Console.WriteLine(j ); return; static void Main( ) Test lei=new Test( ); lei.myMeth( ); 答案：答案：16 7、using System; class Test public void Swap(int x,int y) int k; k=x; x=y; y=k; static void Main() int a=8, b=68; Console.WriteLine(“a=0, y=1“, a, b); Testsw=new Test(); sw.Swap(a, b); Console.WriteLine(“a=0, y=1“, a, b); 答案：答案：a=8,b=68 a=8,b=68 8、using System; class TestoverLoad public void print(int i) Console.WriteLine(“输出的整数输出的整数=0“，i); public void print(strings) Console.WriteLine(“输出的字符串输出的字符串=0“,s); public void print(double d) Console.WriteLine(“输出的双精度数输出的双精度数=0“，d); classtest public static void Main( ) TestoverLoadapp=new TestoverLoad( ); app.print(6); app.print(“理解方法重载了吗？理解方法重载了吗？“） ； app.print(3.14); 答案：答案：输出的整数输出的整数=6 输出的字符串输出的字符串=理解方法重载了吗？理解方法重载了吗？ 输出的双精度数输出的双精度数=3.14 9、classA public int count; public A() count = -1; public A(int n) count = n; class Test static void Main() Aa = new A(); Console.WriteLine(“count=0“, a.count); Ab = new A(5); Console.WriteLine(“count=0“, b.count); 答案：答案：count=-1 count=5 10、有以下程序，计算结果、有以下程序，计算结果 static void Main(string args) Console.Write(“输入一整数输入一整数“); String s = Console.ReadLine(); int num = int.Parse(s);