C语言题目001

来源：百度知道编辑：UC知道时间：2024/06/17 17:31:23

#include "stdio.h"
#include "conio.h"
#define MAX
#define MAXIMUM(x,y) (x>y)?x:y
#define MINIMUM(x,y) (x>y)?y:x
void main()
{
int a=10,b=20;
#ifdef MAX
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#else
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#endif
#ifndef MIN
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#else
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#endif
#undef MAX
#ifdef MAX
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#else
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#endif
#define MIN
#ifndef MIN
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#else
printf("\40: The larger one is %d\n",MAXIMUM(a,b));

#if #ifdef和#ifndef都宏，用来条件编译的
分别是“如果，如果定义了，如果没定义”的意思

#ifdef MAX /////////////如果定义了宏MAX ，就编译下面这句
printf("\40: The larger one is %d\n",MAXIMUM(a,b));
#else //////////////////否则，编译下面这句
printf("\40: The lower one is %d\n",MINIMUM(a,b));
#endif

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