小弟有一事不解，代码如下： char msg_items_buf(char **top,char **bottom) { int posi=0; long length; char *substr=""; int handler=open("template.html",O_RDONLY,0); length=lseek(handler,0L,SEEK_END); lseek(handler,0L,SEEK_SET); *top=(char *)malloc((length+1)*sizeof(char)); read(handler,*top,length); *bottom=strstr...

写了一个函数： [code] int *screenCenter( int width,int height) { int wh[2]; int cxScreen, cyScreen ; cxScreen = GetSystemMetrics (SM_CXSCREEN) ; cyScreen = GetSystemMetrics (SM_CYSCREEN) ; //int width=800,height=600; wh[0]=cxScreen/2-width/2; wh[1]=cyScreen/2-height/2; return wh; } [/code] 运行后提示：function returns address of local variable？

本帖最后由 zhuomingliang 于 2010-05-26 13:17 编辑 hello 我声明了 一个宏 #define ASSERT_ARGS(a) int _ASSERT_ARGS_CHECK =0 然后在函数里面使用 void main(args) { ASSERT(args); int i = 0; i++; } 但是用MSVC编译会出现 warning C4189: '_ASSERT_ARGS_CHECK' : local variable is initialized but not referenced 警告，如何局部地绕过这个警告？ 已解决 http://bbs.chinaunix.net/redirect.php...

set-variable=local-infile=0是什么意思？ 本地不能导入sql文件？？？

原始标题：VC [C4700] 错误，无法解决 [code] #include #define MAX 100 #define NULL 0 struct stack /*定义栈存储结构*/ {int data_stack[MAX]; int top; }; typedef struct stack STACK; STACK *createstack(void) /*创建一个栈*/ {STACK *s; int len,i,num; printf("\n\n请输入单链表的长度:"); scanf("%d",&len); s->top=len; printf("\n↓请输入顺序表的数据↓...

请问：什么时侯该用$variable，什么时侯该用${variable}啊？

Hi All, Need you guys advise urgently. Let's say I got an object where there is 1 static instance variable, which going to set and get by 2 static methods. Since static method is not required to instantiate the object before we can use so any possibility JVM will clear the value of the static instance variable when it's trigger the Garbage Collector? FYI, I'm using this static method in my struts...

If the pattern matches the beginning of the variable's value, delete the shortest part that matches and return the rest. 题目上的代码是这么解释的 $ x=supercalifragilisticexpialidocious A famous word with amazing properties $ echo There are ${#x} characters in $x There are 34 characters in supercalifragilisticexpialidocious 可是为什么${#x} 是返回X变量的长度？？ 并且前面可以不用使用这种新式va...

如果存在数组里是没有问题，可以打印出来 如果不存在数组里，我想打印一个错误讯息，或者打印 variable怎么办呢，没有思路，谢谢指点

常用的东西： generate random variable with non-uniform distribution. 文件: generation distribution from uniform distribution.pdf 大小: 135KB 下载: 下载 文件: pareto from uniform.pdf 大小: 27KB 下载: 下载 常用的distribution都包括了。 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/14802/showart_157089.html