慕标0322664
2020-04-07 23:05
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num != 0 && num >= 999999999);{
while(num != 0){
num = num / 10;
count++;
}
System.out.println("它是个"+ count + "位的数!");
} else{
System.out.println("输入有误!");
}
}
}
正确代码
public class HelloWorld{ public static void main(String[] args){ int num = 999; int count = 0; if(num != 0 && num <= 999999999){ while(num != 0){ num = num / 10; count++; } System.out.println("它是个"+ count + "位的数!"); } else{ System.out.println("输入有误!"); } } }
if(num>=0&&num<=999999999){}
int num = 999;
int count = 0;
for(int i=1;i<100;i++){
++count;
if(num<10){
System.out.println("它是个"+count+"位的数!");
break;
}
num = num/10;
}
Java入门第一季(IDEA工具)升级版
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