ch21-2.c

来自「C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮」· C语言 代码 · 共 21 行

#include "stdio.h"
swap(int *p1, int *p2)   
{
   int p;
   p=*p1;  
   *p1=*p2;  
   *p2=p;
}
main()
{
   int a,b;
   int *p1,*p2;
   printf("\nInput two integer numbers:");
   scanf("%d%d", &a,&b);
   printf("\nBefore swap: a=%d,b=%d\n",a,b); 
   p1=【 1 】; 
   p2=【 2 】;
    【 3 】;  
   printf("\nAfter swap: a=%d,b=%d\n",a,b);
}