为什么int count = 0;放到for()里面赋值就会报错,for之前赋值就没问题
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for(;num!=0;count++){
num/=10;
}
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;
for(;num!=0;count++){
num/=10;
}
System.out.println("它是个"+count+"位的数!");
}
}
2019-08-19
举报