给出一个整数，然后用相反顺序打印出来 （递归函数， While 的应用）

#include<stdio.h>
   int main(){
   int num,reverse_number;

    //User would input the number
   printf("\nEnter any number:");
   scanf("%d",&num);

   //Calling user defined function to perform reverse
   reverse_number=reverse_function(num);
   printf("\nAfter reverse the no is :%d",reverse_number);
   return 0;
}
   int sum=0,rem;
   reverse_function(int num){
     if(num){
     rem=num%10;
     sum=sum*10+rem;
    reverse_function(num/10);
   }
   else
   return sum;
   return sum;
}

Enter any number: 23456
After reverse the no is :65432

#include<stdio.h>
int main()
{
   int num,rem,reverse_num=0;
   //Input number
   printf("\nEnter any number:");
   scanf("%d",&num);

   while(num>=1)
   {
   rem = num % 10;
   reverse_num = reverse_num * 10 + rem;
   num = num / 10;
   }

   printf("\nReverse of input number is: %d", reverse_num);
   return 0;
}

Enter any number:123456789

Reverse of input number is: 987654321