#include<stdio.h>int main(){??? char c=',';??? int n,i=0,j=0,a[100];??? scanf("%d",&n);??? if(n<1000)??? printf("%d",n);??? else??? {??????? for(i=0;n>=1000;i++)??????? {??????????? a[i]=n%1000;??????????? n/=1000;??????????? j=i+1;??????? }??????? a[j]=n;??????? for(i=j;i>0;i--)??????? {??????????? printf("%d%c",a[i],c);??????? }??????? printf("%d",a[0]);??? }}分隔符后面第一個(gè)數(shù)字如果是0，這個(gè)0就無法輸出