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ÎÒÃÇÀ´¿´Ò»Ï¾­µäÈëÃųÌÐò"Hello World£¡"
# vi hello.c
#include <stdlib.h>
#include <stdio.h>
void main(void)
{
printf("hello world!\r\n");
}
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#gcc hello.c
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#gcc hello.c -o hello.exe
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1£©Ô¤´¦Àí(Pre-processing)
Ôڸý׶Σ¬±àÒëÆ÷½«CÔ´´úÂëÖеİüº¬µÄÍ·ÎļþÈçstdio.h±àÒë½øÀ´£¬Óû§¿ÉÒÔʹÓÃgccµÄÑ¡Ïî”-E”½øÐв鿴¡£
Ó÷¨£º#gcc -E hello.c -o hello.i
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[root]# gcc -E hello.c -o hello.i
[root]# ls
hello.c  hello.i
[root]# vi hello.i
# 1 "hello.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "hello.c"
# 1 "/usr/include/stdlib.h" 1 3
# 25 "/usr/include/stdlib.h" 3
# 1 "/usr/include/features.h" 1 3
# 291 "/usr/include/features.h" 3
# 1 "/usr/include/sys/cdefs.h" 1 3
# 292 "/usr/include/features.h" 2 3
# 314 "/usr/include/features.h" 3
# 1 "/usr/include/gnu/stubs.h" 1 3
# 315 "/usr/include/features.h" 2 3
# 26 "/usr/include/stdlib.h" 2 3
# 3 "hello.c" 2
void main(void)
{
printf("hello world!\r\n");
}
2)±àÒë½×¶Î(Compiling)
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