[英]Java Series of number of loop
Here is my code it doesn't seem to perform the code when n > 0 sout.you entered a positive number, Or i think i'm doing it wrong? 这是我的代码,当n> 0 sout.you输入一个正数时,似乎没有执行该代码,或者我认为我做错了吗?
import java.util.Scanner;
class speed {
public static void main(String[] args) {
Scanner x = new Scanner(System.in);
int num;
int neg = 0, count = 0, pos = 0;
System.out.println("Enter any number to continue. Enter 0 to stop : ");
num = x.nextInt();
if(num==0){
System.out.print("You immediately stop");
System.exit(0);
}
while (num != 0) {
count ++;
if (num > 0 ) {
pos ++;
}
if (num < 0 ) {
neg ++;
}
num = x.nextInt();
if(count==1){
}
}
if(count == 1 && num > 0) {
System.out.print("You entered a positive number");
if(count ==1 && num < 0) {
System.out.print("You entered a negative number"); // this code is not performing why?
}
System.exit(0);
}
System.out.printf("You Entered %d numbers\n",count);
System.out.printf("%d positive \n",pos);
System.out.printf("%d negative\n",neg);
}
}
Here is the outputs that i have which is correct. 这是我的输出是正确的。
My output
Enter a number to continue. Enter 0 to stop :
5
6
-8
0 // doesn't count as a number.
You entered 3 numbers.
2 positive
1 negative
BUT in this problem i want the output to be different if the user only typed 1 number. 但是在这个问题上,如果用户只键入1个数字,我希望输出是不同的。
What i want the output to be >
Enter a number to continue. Enter 0 to stop :
2
0
You Entered a positive number. // same with a negative number?
When you exit from the while loop, 'num' is always zero. 从while循环退出时,“ num”始终为零。 Therefore the test
因此测试
if(count == 1 && num > 0)
always fails. 总是失败。 Try
尝试
if(count == 1) {
if (pos > 0) {
System.out.print("You entered a positive number");
} else {
System.out.print("You entered a negative number");
}
} else {
//...put the code for more than one number here
}
Also the lines 还有线
if(count==1){
}
do nothing. 没做什么。
You could try the below code 您可以尝试以下代码
import java.util.Scanner;
class speed {
public static void main(String[] args) {
Scanner x = new Scanner(System.in);
int num;
int neg = 0, count = 0, pos = 0;
System.out.println("Enter any number to continue. Enter 0 to stop : ");
num = x.nextInt();
if(num==0){
System.out.print("You immediately stop");
System.exit(0);
}
while (num != 0) {
count ++;
if (num > 0 ) {
pos ++;
}
if (num < 0 ) {
neg ++;
}
num = x.nextInt();
if(count==1){
}
}
if(count == 1 && num > 0) {
System.out.print("You entered a positive number");
if(count ==1 && num < 0) {
System.out.print("You entered a negative number");
}
System.exit(0);
}
System.out.println("You Entered "+pos+" positive numbers");
System.out.println("You Entered "+neg+" negative numbers");
}
}
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