Question

java中整型数和浮点数怎么用判断

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Answer 1

public class Test{
public static void main(String []args){
java.util.Scanner sca = new java.util.Scanner(System.in);
System.out.println("输入一个数字");
double a = sca.nextDouble();
int b = (int)a;
int c = b;
if (c!=a){
System.out.println("输入的是浮点型数字！");
}else{
System.out.println("输入的是整型数字！");
}
}
}