习题6-6 使用函数输出一个整数的逆序数

Posted 2021-12-28 2018jason

 1 #include <stdio.h>
 2 
 3 int reverse( int number );
 4 
 5 int main()
 6 
 7     int n;
 8 
 9     scanf("%d", &n);
10     printf("%d\n", reverse(n));
11 
12     return 0;
13 
14 
15 /* 你的代码将被嵌在这里 */
16 int reverse( int number )
17 
18     int flag = 1;
19     int result = 0;
20     if(number < 0)
21     
22         flag = -1;
23         number = -number;
24     
25     do
26     
27         result = result * 10 + number%10;
28         number = number / 10;
29     while(number != 0);
30     
31     return flag * result;
32