循环可以用别的吗?
if(num>=0&&num<=999999999){
while(num!=0){
count++;
num/=10;
}
System.out.println("它是个"+count+"位的数");
}else{
System.out.println("输入有误!");
}
改为for循环
if(num>=0&&num<=999999999){
while(num!=0){
count++;
num/=10;
}
System.out.println("它是个"+count+"位的数");
}else{
System.out.println("输入有误!");
}
改为for循环
2019-05-14
举报