Scanner console = new Scanner(System.in);
System.out.print("How many numbers do you have?");
int totalNumbers = console.nextInt();
double sum = 0.0;
for (int i = 1; i <= totalNumbers; i++); {
System.out.print(" #" + i + " ?");
double next = console.nextDouble();
sum += next;
}
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
i cannot be resolved to a variable 程序报错,说黑体那行的i有问题,但是我怎么看都找不出问题啊?
System.out.print("How many numbers do you have?");
int totalNumbers = console.nextInt();
double sum = 0.0;
for (int i = 1; i <= totalNumbers; i++); {
System.out.print(" #" + i + " ?");
double next = console.nextDouble();
sum += next;
}
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
i cannot be resolved to a variable 程序报错,说黑体那行的i有问题,但是我怎么看都找不出问题啊?
import java.util.*;
public class Cumulative {
public static void main(String[] args) {
System.out.println("This program calculates a sequense of numbers.");
System.out.println();
Scanner console = new Scanner(System.in);
System.out.print("How many numbers do you have?");
int totalNumbers = console.nextInt();
double sum = 0.0;
for (int i = 1; i <= totalNumbers; i++); {
System.out.print(" #" + i + " ?");
double next = console.nextDouble();
sum += next;
}
System.out.println("sum = " + sum);
}
}
{前多了一个 ;
这样写可以通过,只是这样写没有循环体,就没有特别意思了
for(int i=0;i<10;i++)
systemt.out.println(9);
这样写的话,去掉冒号,就可以循环打印9个9for(int i=0;i<10;i++)
system.out.println(9);
system.out.println(1);
这样的话先打印9个9,在打印1个1
i を解決できません at de.main(de.java:16)for(int i=0;i <10;i++); 多一个;
this can't be a question!'
import java.util.*;
public class Cumulative {
public static void main(String[] args) {
System.out.println("This program calculates a sequense of numbers.");
System.out.println();Scanner console = new Scanner(System.in);
System.out.print("How many numbers do you have?");
int totalNumbers = console.nextInt();double sum = 0.0;
for (int i = 1; i <= totalNumbers; i++)/*; */{
System.out.print(" #" + i + " ?");
double next = console.nextDouble();sum += next;
}
System.out.println("sum = " + sum);
}
}
严格按代码格式编写,应该可以避免因为这样的不细心造成的小错误
后面的;是多余的.平时注意些就行,别犯了这种错误!!