云南大学软件学院Java实验三
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云南大学软件学院
实验报告
姓名：王定欢学号：20141120188 班级：日期：2016.10.8 成绩：
JAVA实验三
一、实验目的：
熟悉JAVA的控制流程，循环控制，数组结构,以及Big Numbers.
二、实验要求：
1. Write a Java program called AverageNumbers
2.java that calculates the average
of numbers 1 to 50 using the for loop. Do it again using the while loop.
2.Write a Java program called InputParms.java that accepts 3 arguments in the
main method using an array. Iterate through the array looking for your name using a for loop. Display the message "The name
3.Write a Java program called BreakLoop.java that uses a for loop with the variable
"count" and count 1 to 10.. Display "count=
4.Write a Java program called ContinueLoop.java that uses a for loop with the
variable "count" and count 1 to 10.. Display "count=
三、实验内容：
一．①代码：
package lab3；
public class AverageNumbers2 {
public static void main(String[]args){
int a,b=0,i=1;
for(i=1;i<=50;i++)
{
a=i;
b=b+a;
}
double avg;
avg=b/50.0;
System.out.println("The for loop averagenumber is:"+avg);
int num=1,sum=0;
while(num<=50){
sum=sum+num;
num++;
}
double avg1;
avg1=sum/50.0;
System.out.println("The while loop averagenumber is:"+avg1);
}
}
②．实验结果：
二.①.代码：package lab3;
import java.util.Scanner;
public class InputaParms {
public static void main(String[] args){
String name[] = new String [3];
System.out.println("please input three name");
Scanner in = new Scanner(System.in);
for(int i=0;i<3;i++){
System.out.println("please input the order"+(i+1)+" name:");
name[i] = in.next();
}
System.out.println("please input your name:");
String yourname = in.next();
for(int j=0;j<3;j++){
if (name[j].equals(yourname)) {
System.out.println("your name "+name[j]+" was found");
}
}
}
}
②．实验结果：
三．①代码：
package lab3;
public class BreakLoop {
public static void main(String[]args){
for(int i=0;i<10;i++){
if(i==5){
break;
}
System.out.println("count="+i);
}
System.out.println("Broke out of the loop at count = 5");
}
}
②．实验结果：
四．①代码：
package lab3;
public class ContinueLoop {
public static void main(String[]args){
for(int i=0;i<10;i++){
if(i==5){