DAY3|±à¸ö"hello world"µÄC³ÌÐòÏÈ~
½ñÌìÒª±à¸ö×î¼òµ¥µÄ"hello world"µÄC³ÌÐò£¬ËãÊdzõ²½¸ÐÊÜÏÂLinuxÖеıà³Ì»·¾³£¬Éæ¼°ÒÔÏÂ3¸ö²½Ö裺
1. ÏÈÔÚ"vim"Àï±àдԴÎļþ£»
2. È»ºóÔÙÓÃ"gcc"±àÒëÉú³É"hello"µÄ¿ÉÖ´ÐÐÎļþ£»
3. ÔËÐÐ"hello"£¬¿´¿´Ð§¹û¡£
ÄÇô¿ªÊ¼°É£¡
1. vim
vim hello.c
i
#include <stdio.h>
int
main (void)
{
printf ("hello.\n");
return 0;
}
ESC
ZZ
2. gcc
gcc -Wall hello.c -o hello
3. ÔËÐгÌÐò
./hello
Ïà¹ØÎĵµ£º
C³ÌÐòÊÇÓÉÒ»×é»òÊDZäÁ¿»òÊǺ¯ÊýµÄÍⲿ¶ÔÏó×é³ÉµÄ¡£ º¯ÊýÊÇÒ»¸ö×ÔÎÒ°üº¬µÄÍê³ÉÒ»¶¨Ïà¹Ø¹¦ÄܵÄÖ´ÐдúÂë¶Î¡£ÏÂÃæС±àºÍ´ó¼Ò·ÖÏíÏÂCÓïÑÔÖеĺ¯Êý¡£
1. registerbgidriverº¯Êý
registerbgidriverº¯ÊýµÄ¹¦ÄÜÊǵǼÒÑÁ¬½Ó½øÀ´µÄͼÐÎÇý¶¯³ÌÐò´úÂ룬ÆäÓ÷¨Îª£ºint registerbgidriver(void(*driver)(void ......
1.1= Óë ==
Àý1£º
±¾ÀýÖÐÑ»·Óï¾äµÄ±¾ÒâÊÇÌø¹ýÎļþÖеĿոñ·û¡¢ÖƱí·û¡¢»»Ðзû
while(c=''||c=='\t'||c=='\n')
c=getc(f);
c= ''||c=='\t'||c=='\n'
ËÀÑ»·
Àý2£º
if((filedesc==open(argv[i],0))<0)
error();
ÓÀÔ¶²»»á±»µ÷ÓÃ
1.2 & ºÍ | ²»Í¬ÓÚ&& ºÍ||
1.3 CÓ ......
C³ÌÐòÊÇÓÉÒ»×é»òÊDZäÁ¿»òÊǺ¯ÊýµÄÍⲿ¶ÔÏó×é³ÉµÄ¡£ º¯ÊýÊÇÒ»¸ö×ÔÎÒ°üº¬µÄÍê³ÉÒ»¶¨Ïà¹Ø¹¦ÄܵÄÖ´ÐдúÂë¶Î¡£ÏÂÃæС±àºÍ´ó¼Ò·ÖÏíÏÂCÓïÑÔÖеĺ¯Êý¡£
1. settextstyleº¯Êý
settextstyleº¯ÊýµÄ¹¦ÄÜÊÇΪͼÐÎÊä³öÉèÖõ±Ç°µÄÎı¾ÊôÐÔ£¬ÆäÓ÷¨Îª£ºvoid far settextstyle (int font, int direction, char size);³ ......
C³ÌÐòÊÇÓÉÒ»×é»òÊDZäÁ¿»òÊǺ¯ÊýµÄÍⲿ¶ÔÏó×é³ÉµÄ¡£ º¯ÊýÊÇÒ»¸ö×ÔÎÒ°üº¬µÄÍê³ÉÒ»¶¨Ïà¹Ø¹¦ÄܵÄÖ´ÐдúÂë¶Î¡£ÏÂÃæС±àºÍ´ó¼Ò·ÖÏíÏÂCÓïÑÔÖеĺ¯Êý¡£
1. sopenº¯Êý
sopenº¯ÊýµÄ¹¦ÄÜÊÇ´ò¿ªÒ»¹²ÏíÎļþ£¬ÆäÓ÷¨Îª£ºint sopen(char *pathname, int access, int shflag, int permiss);³ÌÐòʵÀýÈçÏ£º
#include ......
ÒýÑÔ
¡¡¡¡Ö¸ÕëÊÇC/C++ÓïÑÔµÄÌØÉ«£¬¶øÊý×éÃûÓëÖ¸ÕëÓÐÌ«¶àµÄÏàËÆ£¬ÉõÖÁºÜ¶àʱºò£¬Êý×éÃû¿ÉÒÔ×÷ΪָÕëʹÓá£ÓÚÊǺõ£¬ºÜ¶à³ÌÐòÉè¼ÆÕ߾ͱ»¸ãºýÍ¿ÁË¡£¶øÐí¶àµÄ´óѧÀÏʦ£¬ËûÃÇÔÚCÓïÑԵĽÌѧ¹ý³ÌÖÐÒ²´íÎóµÃ¸øѧÉú½²½â£º"Êý×éÃû¾ÍÊÇÖ¸Õë"¡£ºÜÐÒÔË£¬ÎҵĴóѧÀÏʦ¾ÍÊÇÆäÖÐÖ®Ò»¡£Ê±ÖÁ½ñÈÕ£¬ÎÒÈÕ¸´Ò»ÈյؽøÐÐ×ÅC/C++ÏîÄ¿µÄ¿ª·¢£¬¶øÉí±ß» ......