需要修复我的程序。使用WHILE LOOP编写一个Java程序：多少个正数和负数？用户提示整数并以数字0结尾。您将在我的输出中看到，如果用户输入1 2 3 -1 -2 -3 0我的输出答案：2正/ 3负。第一个正数不计算在内。请让我知道我的错误在哪里。我找不到它了。
Scanner input= new Scanner(System.in);
//int data;
int count = 0;
int negative=0;
int positive =0;
System.out.print("Enter an integer (Program ends if enter 0): ");
int data = input.nextInt();
while (data !=0) {
System.out.print("Enter an integer (Program ends if enter 0): ");
data=input.nextInt();
//count++;
if (data < 0){
negative++;
}else if (data > 0){
positive++;
}
count++;
}
System.out.println(positive + " positive numbers");
System.out.println(negative + " negative numbers");
}
}
output:
run:
Enter an integer (Program ends if enter 0): 1
Enter an integer (Program ends if enter 0): 2
Enter an integer (Program ends if enter 0): 3
Enter an integer (Program ends if enter 0): -1
Enter an integer (Program ends if enter 0): -2
Enter an integer (Program ends if enter 0): -3
Enter an integer (Program ends if enter 0): 0
2 positive numbers
3 negative numbers
BUILD SUCCESSFUL (total time: 11 seconds)
进入循环后，您将无法使用第一个输入。
更新的代码：
扫描仪输入=新的Scanner（System.in）;
// int data;
int count = 0;
int negative = 0;
int positive = 0;
System.out.print("Enter an integer (Program ends if enter 0): ");
int data = input.nextInt();
while (data != 0) {
// count++;
if (data < 0) {
negative++;
} else if (data > 0) {
positive++;
}
count++;
System.out.print("Enter an integer (Program ends if enter 0): ");
data = input.nextInt();
}
System.out.println(positive + " positive numbers");
System.out.println(negative + " negative numbers");
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