比如，下面的代码：#include <stdio.h>#include <stdlib.h>int main(){ int i=0; /* ... some code here ... */ if(i); return 1; return 0; } 我不小心在 if 条件后面多打了一个分号。现在，如果使用下面的 gcc 命令来进行编译，不会生成任何警告。gcc -Wall test....
# 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...
voidfun1();voidfun2(); fun1.c #include<stdio.h>voidfun1(){printf("this is fun1\n");} fun2.c #include<stdio.h>voidfun2(){printf("this is fun2\n");} main.c #include<stdio.h>#include<stdlib.h>#include"head.h"intmain(intargc,char*argv[]){printf("this is main!\n");fu...
#include <stdio.h>#include<dlfcn.h>#include<stdlib.h>#include<iostream>usingnamespacestd;intmain() {inta =0;void*handle = dlopen("./libadd_c.so", RTLD_LAZY);if(!handle) { printf("open lib error\n"); cout<<dlerror()<<endl;return-1; } typedefint(*add_t)(inta,intb); add_t...
先去系统目录按预设的系统路径列表去查找头文件,如果没有再到当前目录下找,像标准的头文件 stdio.h、stdlib.h 等用这个方法。 "header.h"首先在当前文件所在目录下寻找,如果找不到,再到系统目录中寻找,常用于我们自定义编写的头文件,让系统优先使用当前目录中定义的。 (2)库文件(...
vim hello.c#include"stdio.h"#include"stdlib.h"intmain(){system("cat hello.c");printf("Hello World!\n\n");return0;} 1. 2. 3. 4. 5. 6. 7. 8. 编译gcc hello.c 执行./a.out 输出: AI检测代码解析 #include"stdio.h"#include"stdlib.h"intmain(){system("cat hello.c");printf("...
km.h: ... #pragma omp declare simd simdlen(4) notinbranch float expf(float) ... test.c: #include <km.h> #include <stdio.h> #include <stdlib.h> int main() { long loop = 1e7; int len = 8192; float *a = (float*)malloc(sizeof(float) * len); float *b = (float*)mall...
*/ #ifndef _STDLIB_H #include <features.h> /* Get size_t, wchar_t and NULL from <stddef.h>. */ #define __need_size_t #ifndef __need_malloc_and_calloc # define __need_wchar_t # define __need_NULL #endif #include <stddef.h> __BEGIN_DECLS #...
km.h: ... #pragma omp declare simd simdlen(4) notinbranch float expf(float) ... test.c: #include <km.h> #include <stdio.h> #include <stdlib.h> int main() { long loop = 1e7; int len = 8192; float *a = (float*)malloc(sizeof(float) * len); float *b = (float*)mall...
#include <stdlib.h> #include <stdio.h> void main(void) { printf("hello world!\r\n"); } 1. 2. 3. 4. 5. 6. 7. 8. 用gcc编译成执行程序。 #gcc -o hello hello.c 该命令将hello.c直接生成最终二进制可执行程序a.out 这条命令隐含执行了(1)预处理、(2)汇编、(3)编译并(4)链接形成...