+conunt+是什么意思,为什么不能直接写成System.out.println("它是个"count"位的数");
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
do{
num=num/10;
count++;
}
while(num!=0);
System.out.println("它是个"+count+"位的数");
}
}
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
do{
num=num/10;
count++;
}
while(num!=0);
System.out.println("它是个"+count+"位的数");
}
}
2016-12-15
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