- 在屏幕上显示文件内容
#include <stdio.h>void main(){ FILE *fp; char ch; fp=fopen("E:\\123.txt",&...
- 向文件中写入字符,当输入#时结束
#include <stdio.h>#include <stdlib.h>void main(){ FILE *fp; char ch; if((fp=fo...
- 输出行号#line
#line 100 "13.7C"#include <stdio.h>void main(){ printf("1,当前行号是:%d\n&...
- #ifdef和#ifndef的应用
#include <stdio.h>#define STR "Believe yourself\n"int main(){#ifdef STR pr...
- 判断输入的体温是不是正常
#include <stdio.h>#define TEM 37int main(){#if TEM>37 printf("高烧\n");#e...
- 使用#else判断19054是不是能被9527整除的偶数
#include "stdio.h"#define iInput 19054int main(){ printf("当前是:%d\n",iI...
- 利用宏和#if与50比较大小
#include <stdio.h>#define NUM 50void main(){ int i=0;#if NUM>50 i++;#endif#if NUM...
- 宏定义的#include指令
age.h文件内容:#define P printf#define D "%d"#define A (age+1)age.c文件如下:#include &quo...
- 带参数的宏定义
#include <stdio.h>#define MIX(a,b) (a<b?a:b)int main(){ int x=15,y=9; printf(&quo...
- #define与#undef相关
#include <stdio.h>#define TEST "this is an example"void main(){ char exp[3...
