题解 | #数字颠倒#

#include <stdio.h>
#include <stdlib.h>
#include <string.h>


#define max 1000
#define row 100
#define col 1001

//2021/7/3 - 17:50
//2021/7/3 - 17:53

void itoa_10_rvs(char* s, int v)
{
   char cvt[] = {'0', '1', '2', '3','4','5','6','7','8','9'};

   int i = 0;

   if (v == 0)
   {
      s[0] = '0';
      s[1] = 0;
      return;
   }

   while ( v != 0)
   {
      s[i++] = cvt[v % 10];
      v /= 10;
   }

   s[i] = 0;

   return;
}


int main()
{
   int i, x;
   char s[max];

   scanf("%d", &x);

   itoa_10_rvs(s, x);

   puts(s);

   //for (i = strlen(s) - 1; i >= 0; i--)
   //{
   //   putchar(s[i]);
   //}

   return 0;
}