Question

求助：java中怎样利用If语句判断一个数的正负

Answer 1

示例：

if(num<0){
         System.out.println("neagtive");
     }
     else if(num>0){
         System.out.println("positive");}
     else{     System.out.println("zero");
     }
     }

Answer 2

if(num>0){
System.out.println("正数");
}else{
System.out.println("负数");
}