import java.util.Scanner;
public class CountAverage{ int sum=0;
int average;
int grage;
int i=0;
int n;
public void sum(){
int sum=0;
int average;
int grage;
int i=0;
int n;
Scanner input=new Scanner(System.in);
System.out.println("pleaae enter the Amount of your Integer:");
n=input.nextInt();
while(i<n)
{ grade=input.nextInt();
if(grade>=0&&grade<=100)
sum=sum+grade;
else
{System.out.println("you enter a wrong number,please enter again");
continue;}
}
i++;
}
public void Count(){
average=sum/n;
System.out.println("the average is %d"+average);
}}代码如上 我想实现的功能是求平均数---我想随机输入数字就求平均数--当她输入的数字不在0---100之间就让它重新输入---
这代码实现不了 出现了以下错误
G:\javaex\CountAverage.java:24: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
{ grade=input.nextInt();
^
G:\javaex\CountAverage.java:25: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
if(grade>=0&&grade<=100)
^
G:\javaex\CountAverage.java:25: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
if(grade>=0&&grade<=100)
^
G:\javaex\CountAverage.java:26: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
sum=sum+grade;
^
G:\javaex\CountAverage.java:26: 运算符 + 不能应用于 int,grade
sum=sum+grade;
^
G:\javaex\CountAverage.java:26: 不兼容的类型
找到: <nulltype>
需要: int
sum=sum+grade;
^
麻烦大家帮改改啊
public class CountAverage{ int sum=0;
int average;
int grage;
int i=0;
int n;
public void sum(){
int sum=0;
int average;
int grage;
int i=0;
int n;
Scanner input=new Scanner(System.in);
System.out.println("pleaae enter the Amount of your Integer:");
n=input.nextInt();
while(i<n)
{ grade=input.nextInt();
if(grade>=0&&grade<=100)
sum=sum+grade;
else
{System.out.println("you enter a wrong number,please enter again");
continue;}
}
i++;
}
public void Count(){
average=sum/n;
System.out.println("the average is %d"+average);
}}代码如上 我想实现的功能是求平均数---我想随机输入数字就求平均数--当她输入的数字不在0---100之间就让它重新输入---
这代码实现不了 出现了以下错误
G:\javaex\CountAverage.java:24: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
{ grade=input.nextInt();
^
G:\javaex\CountAverage.java:25: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
if(grade>=0&&grade<=100)
^
G:\javaex\CountAverage.java:25: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
if(grade>=0&&grade<=100)
^
G:\javaex\CountAverage.java:26: 找不到符号
符号: 变量 grade
位置: 类 CountAverage
sum=sum+grade;
^
G:\javaex\CountAverage.java:26: 运算符 + 不能应用于 int,grade
sum=sum+grade;
^
G:\javaex\CountAverage.java:26: 不兼容的类型
找到: <nulltype>
需要: int
sum=sum+grade;
^
麻烦大家帮改改啊
import java.util.Scanner;public class CountAverage { int sum = 0; int average; int grage; int i = 0; int n; public void sum() { int sum = 0;
// int average;
// int grage;
int i = 0;
int n; Scanner input = new Scanner(System.in);
System.out.println("pleaae enter the Amount of your Integer:");
n = input.nextInt();
while (i < n) {
int grade = input.nextInt();
if (grade >= 0 && grade <= 100)
sum = sum + grade;
else {
System.out
.println("you enter a wrong number,please enter again");
continue;
}
}
i++;
} public void Count() {
average = sum / n;
System.out.println("the average is %d" + average);
}
public static void main(String[] args) {
CountAverage ca = new CountAverage();
ca.sum();
ca.Count();
}
}
package com.test.test;import java.util.ArrayList;
import java.util.Scanner;public class Test {
public static void main(String[] args) {
while(true) {
avg();
}
}
private static void avg() {
try {
int k=0;
ArrayList<Integer> a=new ArrayList<Integer>();
boolean stop=true;
while(stop){
Scanner s=new Scanner(System.in);
int i=s.nextInt();
a.add(i);
if(i==0) {
int sum=0;
for(int j=0;j<a.size();j++) {
k=a.get(j);
sum+=k;
}
double avgs=(double)sum/(a.size()-1);
System.out.println("***********");
System.out.println(sum);
System.out.println("您输入了"+ (a.size()-1)+"个有效数");
System.out.println("你输入数的平均数为:"+avgs);
System.out.println("***********");
stop=false;
}
else if (i<0||i>100) {
System.out.println("请输入0~100内的整数!");
a.clear();
}
}
} catch (Exception e) {
System.out.println("您输入的格式不对请输入整数!");
}
}
}
说明:输入100以内的数,要求结果输入数字0即可看到结果
测试结果如下:
123
请输入0~100内的整数!
dsfjlads
您输入的格式不对请输入整数!
12
13
14
0
***********
39
您输入了3个有效数
你输入数的平均数为:13.0
***********
11
11
0
***********
22
您输入了2个有效数
你输入数的平均数为:11.0
***********
// int average;
// int grage;
int i = 0;
// int n; Scanner input = new Scanner(System.in);
System.out.println("pleaae enter the Amount of your Integer:");
n = input.nextInt();
while (i < n) {
int grade = input.nextInt();
if (grade >= 0 && grade <= 100)
{ sum = sum + grade;
i++;
}
else {
System.out
.println("you enter a wrong number,please enter again");
continue;
}
}
// i++;
} public void Count() {
average = sum / n;
System.out.println("the average is %d" + average);
}
public static void main(String[] args) {
CountAverage ca = new CountAverage();
ca.sum();
ca.Count();
}
}可以运行 见笑了