负数的除法和取模运算规则

1/*

2 *测试负数除法和取模运算

3 */

4#include <stdio.h>

5

6 int main( void )

7 {

8 printf ("-5 / 2 = %d\t", -5/2);

9 printf ("-5 %% 2 = %d\n", -5%2);

10 printf ("5 / -2 = %d\t",5/ -2);

11 printf ("5 %% -2 = %d\n",5% -2);

12 printf ("-5 / -2 = %d\t", -5/ -2);

13 printf ("-5 %% -2 = %d\n", -5% -2);

14

15 return 0;

16 }

17

18

19

20/*

21 * -5 / 2 = -2 -5 % 2 = -1 ( -5 = 2 * ( -2 ) + ( -1 ) )

22 * 5 / -2 = -2 5 % -2 = 1 ( 5 = ( -2 ) * ( -2 ) + 1 )

23 * -5 / -2 = 2 -5 % -2 = -1 ( -5 = ( -2 ) * 2 + ( -1 ) )

24 *

25 * 被除数、除数、商和余数满足以下关系：

26 * 被除数 =除数 *商 +余数

27 * 余数和被除数的符号一致，而且其绝对值小于除数

28 * 如果被除数和除数的符号一致，那么商为非负数，否则，为非正数

29 *

30 */

/* * 测试负数除法和取模运算 */#include <stdio.h>int main ( void ){printf ( "-5 / 2 = %d\t", -5 / 2 );printf ( "-5 %% 2 = %d\n", -5 % 2 );printf ( "5 / -2 = %d\t", 5 / -2 );printf ( "5 %% -2 = %d\n", 5 % -2 );printf ( "-5 / -2 = %d\t", -5 / -2 );printf ( "-5 %% -2 = %d\n", -5 % -2 );return 0;}/* * -5 / 2 = -2     -5 % 2 = -1( -5 = 2 * ( -2 ) + ( -1 ) ) * 5 / -2 = -2     5 % -2 = 1( 5 = ( -2 ) * ( -2 ) + 1 ) * -5 / -2 = 2     -5 % -2 = -1( -5 = ( -2 ) * 2 + ( -1 ) ) * *  被除数、除数、商和余数满足以下关系： *  被除数 = 除数 * 商 + 余数 *  余数和被除数的符号一致，而且其绝对值小于除数 *  被除数和除数的符号一致，那么商为正数，否则为负数 * */