ch9_2.c

C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮

/*CH9_2*/
/*使用指针变量求解：输入2个整数，按升序（从小到大排序）输出*/
#include<stdio.h>
void main()
{ 
    int num1,num2;
    int *num1_p=&num1, *num2_p=&num2, *pointer;  
    printf("Input the first number:"); 
    scanf("%d",num1_p);
    printf("Input the second number:");
    scanf("%d",num2_p);
    printf("num1=%d, num2=%d\n", num1, num2); 
    if( *num1_p > *num2_p )  /*如果num1>num2，则交换指针所指向的内容*/
    {
        *pointer= *num1_p;
        *num1_p= *num2_p;
        *num2_p= *pointer;
    }
    printf("min=%d, max=%d\n", *num1_p, *num2_p);
}