为什么不正确呢？
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
int j;
j=num/10;
while(j!=0){
count++;
j=j/10;
}
count++;
System.out.println("它是个"+count+"位的数!");
}
}
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public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
int j;
j=num/10;
while(j!=0){
count++;
j=j/10;
}
count++;
System.out.println("它是个"+count+"位的数!");
}
}
2017-10-13
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