3.4.cpp

c程序设计技巧, c入门和简单算法设计。

#include<stdio.h>
void number_loop(long n)
{
     printf("print by loop\n");
     while(n>0)
    {
              printf("%d ",n%10);
              n/=10;
              }
              printf("\n");
    printf("print by rec\n");
}
void number_rec(long n)
{
     if(n>0)
     {
     printf("%d ",n%10);
     number_rec(n/10);
     }
}
int main()
{
    long n;
    scanf("%d",&n);
    if(n>0)
    {
           number_loop(n);
           number_rec(n);
           printf("\n");
        }
    
              scanf("%d",&n);
    return 0;
}