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C_ÆÕͨλÔËËã

 Ô´Âë:
# include <stdio.h>
 
int main()
{
    /* ¶¨ÒåÁËÒ»¸öÎÞ·ûºÅ×Ö·ûÐͱäÁ¿£¬´Ë±äÁ¿Ö»ÄÜÓÃÀ´´æ´¢ÎÞ·ûºÅÊý */
    unsigned char result;
    
    int a, b, c, d;
    a = 2;
    b = 4;
    c = 6;
    d = 8;
 
    /* ¶Ô±äÁ¿½øÐГ°´Î»Ó딲Ù×÷ */
    result = a & c;
    printf("result = %d\n", result);
 
    /* ¶Ô±äÁ¿½øÐГ°´Î»»ò”²Ù×÷ */
    result = b | d;
    printf("result = %d\n", result);
 
    /* ¶Ô±äÁ¿½øÐГ°´Î»Òì»ò”²Ù×÷ */
    result = a ^ d;
    printf("result = %d\n", result);
 
    /* ¶Ô±äÁ¿½øÐГȡ·´”²Ù×÷ */
    result = ~a;
    printf("result = %d\n", result);
    return 0;
}


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Hacks in C Programming Language

 ÏÂÃæÕâ¸ö³ÌÐòÊä³öʲô£¿
enum {false,true};
int main()
{
int i=1;
do
{
printf("%d\n",i);
i++;
if(i < 15)
continue;
}while(false);
return 0;
}

ÄãÏàÐÅô£¿Ï ......

C struct ÖÐ×Ö½Ú¶ÔÆëÎÊÌâ

 VCÖÐÏÂÃ漸¸ö½á¹¹Ìå´óС·Ö±ðÊǶàÉÙÄØ
struct MyStruct
{
    double m4;
    char m1;
    int  m3£»
};
s ......

extern ¡°C¡±Ó÷¨

ÓÃÒ»¾ä»°¸ÅÀ¨extern “C”Õâ¸öÉùÃ÷µÄÕæʵĿµÄ¾ÍÊÇʵÏÖC++ÓëC¼°ÆäËüÓïÑԵĻìºÏ±à³Ì¡£
extern "C"µÄ¹ßÓ÷¨
£¨1£©ÔÚC++ÖÐÒýÓÃCÓïÑÔÖеĺ¯ÊýºÍ±äÁ¿£¬ÔÚ°üº¬CÓïÑÔÍ·Îļþ£¨¼ÙÉèΪcExample.h£©Ê±£¬Ðè½øÐÐÏÂÁд¦Àí£º
extern "C"
{
££i nclude "cExample.h"
}
¶øÔÚCÓïÑÔµÄÍ·ÎļþÖУ¬¶ÔÆäÍⲿº¯ÊýÖ»ÄÜÖ¸¶¨ÎªexternÀà ......

ADC0809 C³ÌÐò

 #include<reg52.h>
#include<intrins.h>
#define uint  unsigned int
#define uchar unsigned char
uint date;
uchar mm=0,n=0;
uint k1,k2,k3,k4,k5,k6;
uchar code b[]={
    0x3f,0x06,0x5b,0x4f,0x66,   //0,1,2,3,4,
    0x6d,0x7d,0x07,0x7 ......

C ¶Á100¸öÊýµ½Êý×é

 #include <stdio.h>
#define MAX 100
int a[MAX], b[MAX], count = 0;
void rData()
{ int i;
FILE *fp;
fp = fopen("C:\\100.dat", "r");
for (i=0; i<MAX; i++)
fscanf(fp, "%d,", &a[i]);
fclose(fp);
}
 
void main()
{ int i;
rData();
//printf("Âú×ãÌõ¼þµÄÊý= ......
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