c ÓïÑÔÖдøconst µÄÖ¸ÕëС¼Ç
Ò»¡¢ÓÐÈçÏ´úÂ룺
int age = 25;
const int *pAge = &age;
ÉÏÃæµÄ´úÂë±íʾ£º
1¡¢Ö¸Õë±äÁ¿pAge´æ·Å±äÁ¿ageµÄµØÖ·£¬ÇÒ²»ÄÜͨ¹ý *pAge = 30£¬À´¸Ä±äÖ¸Õë±äÁ¿pAgeËùÖ¸ÏòµÄ´æ´¢¿Õ¼äµÄÖµ£¬µ«ÊÇ ¶ÔÓÚ age = 30£¬ÔòÊÇûÓÐÎÊÌâµÄ¡£
2¡¢pAge ±¾Éí¿ÉÒÔÔÙ´æ·ÅÆäËü±äÁ¿µÄµØÖ·£¬Ò²¿ÉÒÔÖ¸ÏòNULL£¬Èç pAge = NULL;ÊÇÕýÈ·µÄ¡£
¶þ¡¢ÓÐÈçÏ´úÂ룺
int age = 25;
int *const pAge = &age;
ÉÏÃæµÄ´úÂë±íʾ£º
1¡¢Ö¸Õë±äÁ¿pAgeÓÃconstÏÞ¶¨ÁË£¬ËùÒÔpAge²»ÄÜÔÙ´æ´¢ÆäËü±äÁ¿µÄÖµ£¬Ò²²»ÄÜÖ¸ÏòNULL;ËùÒÔ pAge = NULL;ÊDz»ÕýÈ·µÄ
2¡¢¶ÔÓÚ*page = 30£¬ÊÇÕýÈ·µÄ;
Èý¡¢ÓÐÈçÏ´úÂ룺
int age = 25;
const int *const pAge = &age;
ÉÏÃæµÄ´úÂë±íʾ£º
1¡¢Ö¸Õë±äÁ¿pAge²»ÄÜÔÙ´æ´¢ÆäËü±äÁ¿µÄÖµ»òNULL
2¡¢¶ÔÓÚͨ¹ý*pAge = 30 µÄÐÎʽ¸Ä±äÖ¸Õë±äÁ¿pAgeÖ¸ÏòµÄ´æ´¢¿Õ¼äµÄÖµÊDz»ÕýÈ·µÄ
3¡¢¶ÔÓÚ age = 30 ûÓÐÎÊÌâ
Ïà¹ØÎĵµ£º
C/C++
/*
* File: main.cpp
* Author: Vicky
*
* Created on 2010Äê4ÔÂ29ÈÕ, ÉÏÎç9:46
*/
#include <iostream>
using namespace std;
int maximum(int[], int);
int main(int argc, char** argv) {
// int sg[3][4] = {
int sg[][4] = {
{68, 77, 73, 86},
{87, 96, 7 ......
#include <assert.h>¡¡¡¡¡¡¡¡//É趨²åÈëµã
#include <ctype.h>¡¡¡¡¡¡¡¡ //×Ö·û´¦Àí
#include <errno.h>¡¡¡¡¡¡¡¡ //¶¨Òå´íÎóÂë
#include <float.h>¡¡¡¡¡¡¡¡ //¸¡µãÊý´¦Àí
#include <fstream.h>¡¡¡¡¡¡ //ÎļþÊäÈ룯Êä³ö
#include  ......
ǰÑÔ ²»¶ÏÓÐÍøÓѽ«±àÒëÆ÷ GCC ÎóÈÏΪ IDE£¨¼¯³É¿ª·¢»·¾³£©
ÆÚÍûÍÑÀëÃüÁîÐÐ
ÆÚÍûÄÜÔڲ˵¥Öз¢ÏÖÆäÉíÓ°
ÆÚÍûÆäÄÜÓÐÒ»¸ö¼¯±à¼±àÒëÁ´½Óµ÷ÊÔÔËÐÐÓÚÒ»ÌåµÄ½çÃæ
¹Ê±¾Îĸø´ó¼Ò¼òµ¥ÂÞÁÐһЩ C/C++ ±à³ÌÖпÉÓÃµÄ IDE£¬»òÐíÄã´ÓÖпÉÒÔÕÒÒ»¸öÄãϲ»¶µÄ¡£
Ϊ±ÜÃâÒÔÏÂij¸öÈí¼þ°²×°Ê±²»×Ô¶¯°²×° ......
long longµÄ×î´óÖµ£º9223372036854775807
long longµÄ×îСֵ£º-9223372036854775808
unsigned long longµÄ×î´óÖµ£º1844674407370955161
__int64µÄ×î´óÖµ£º9223372036854775807
__int64µÄ×îСֵ£º-9223372036854775808
unsigned __int64µÄ×î´óÖµ£º18446744073709551615
ÎҵĵçÄÔ¶Ô__int128²»Ö§³Ö£¬Õâ¸ö¿ÉÄÜÊÇÔ¤Áô¸ø½«À ......
CÓïÑÔÖÐÓм¸¸ö»ù±¾ÊäÈ뺯Êý£º
//»ñÈ¡×Ö·ûϵÁÐ
int fgetc(FILE *stream);
int getc(FILE *stream);
int getchar(void);
//»ñÈ¡ÐÐϵÁÐ
char *fgets(char * restrict s, int n, FILE * restrict stream);
char *gets(char *s);//¿ÉÄܵ¼ÖÂÒç³ö£¬ÓÃfgets´úÌæÖ®¡£
//¸ñʽ»¯ÊäÈëϵÁÐ
int fscanf(FILE * r ......