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Linux automake自动编译全攻略 - 脚本技术 - 清泛IT社区，为创新赋能！
...nclude <stdio.h>
#include "lib/calc.h"
int main(int argc, char** argv)
{
int sum = add(1, 2);
printf("sum:%d\n", sum);
r...
C语言面试那些事儿──一道指针与数组问题 - c++1y / stl - 清泛IT社区，为创新赋能！
首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
printf("%d,%d\n", *(a+1), *(ptr-1));
return 0;
}复制代码这道题在很多所谓经典C语言面试题里是常见...
Unicode and UTF-8 - 综合 - 清泛IT论坛，有思想、有深度
...）、和ASCII码不兼容，而且不太好移植(Not Portable)
例如：char *s=“Good ,北京”;该C语言代码采用UTF-16编码后，字节序列中间有许多’\0’，’\0’ 会被识别为字符串的终止，strlen()函数不起用了。
2）、存储空间较大，造成存储及...
SHFileOperation 这个API函数怎么用起来结果飘忽不定？ - c++1y / stl - 清...
...配符查找文件，核心代码如下：
WIN32_FIND_DATA FindFileData;
char szCurPath[MAX_PATH + 1] = { 0 };
GetCurrentDirectory(MAX_PATH, szCurPath);
CString findFileName;
findFileName.Format("%stest*.txt", szCurPath);
HANDLE hFind = ::FindFirstFile(findFileName, &FindFileData);
if...
sizeof、strlen简单总结 - C/C++ - 清泛IT论坛，有思想、有深度
sizeof strlen const char* p 4 字符串长度 std::string 4 字符串长度 "......" 字符串长度+1 ('\0') 字符串长度
Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...xit(1);
}
}
// 锁定文件后，将该进程的pid写入文件
char buf[16] = {};
sprintf(buf, "%d", getpid());
ftruncate(fd, 0);
ret = write(fd, buf, strlen(buf));
if (ret < 0) {
printf("Write file failed, file: %s, error: %s\n", kPidFileName, strerror(errno));
close(fd);
...
How can I return NULL from a generic method in C#?
...l if T is a reference type (or a nullable value type), 0 for int, '\0' for char, etc. (Default values table (C# Reference))
Restrict T to be a reference type with the where T : class constraint and then return null as normal
...
split string only on first instance - java
I want to split a string by '=' charecter. But I want it to split on first instance only. How can I do that ? Here is a JavaScript example for '_' char but it doesn't work for me
split string only on first instance of specified character
...
How to display double quotes(") Symbol in a TextView?
...
In the strings.xml, you can simply escape special characters (eg double quotes) with a backslash :
"message \"quote string 1\" and \"quote string 2\" end message"
But in views xml (eg layout.xml), you have to use HTML character entities (like &quot;) :
"message &...
How many spaces will Java String.trim() remove?
...tation means by "whitespace". It would seem logical that it would be where Chararacter.isWhitespace is true, but that is not what it means by "whitespace" ..
– user2864740
Nov 30 '13 at 9:17
...