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atol 头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数名:atol功能: 把字符串转换成长整型数用法: longatol(const char *nptr);程序例:#include <stdlib.h> #includ...#include <stdlib.h>
函数名: atol
功 能: 把字符串转换成长整型数
用 法: long atol(const char *nptr);
实例:
#include <stdlib.h>
#include <s...
C++ 通过主机名/域名获取IP - C/C++ - 清泛网 - 专注C/C++及内核技术
...中用到Winsock API 函数，都要用到 Ws2_32.lib
void GetHostIP(char *szIPAddr)
{
WSADATA wsaData;
char name[155]; //定义用于存放获得主机名的变量
char *ip; //定义IP地址变量
PHOSTENT hostinfo;
//调用MAKEWORD()获得Winsocl版本的正确值...
std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃 ...
....str().c_str() 字符串指针可能导致崩溃std::stringstream ss;const char* ch = ss str() c_str();call_func(ch);这种写法在系统内存不足时，ss会立马释放内存，字符串指针ch可能会非法访问导致崩溃。代码最好的是
std::stringstream ss;
const char* ch = ss...
boost库编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ee::xml_writer_settings<std::string> settings(' t', 1, "GB2312");报错：char不能转换为std::string。1.5...boost::property_tree::xml_writer_settings<std::string> settings('\t', 1, "GB2312");
报错：char不能转换为std::string。
1.54 版本 报错，改为boost::property_tree::xml_wr...
VC/Linux C++ 递归访问目录下所有文件 - c++1y / stl - 清泛IT社区，为创新赋能！
VC函数，部分代码如下：find(char * lpPath)
{
char szFind[MAX_PATH];
WIN32_FIND_DATA FindFileData;
strcpy(szFind,lpPath);
strcat(szFind,"\\*.*");
HANDLE hFind=::FindFirstFile(szFind,&FindFileData);
&...
Maximum length of the textual representation of an IPv6 address?
...
45 characters.
You might expect an address to be
0000:0000:0000:0000:0000:0000:0000:0000
8 * 4 + 7 = 39
8 groups of 4 digits with 7 : between them.
But if you have an IPv4-mapped IPv6 address, the last two groups can b...
Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
...
Convert Elixir string to integer or float
...k String.to_integer/1 and String.to_float/1.
Hint: See also to_atom/1,to_char_list/1,to_existing_atom/1for other conversions.
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Reserved keywords in JavaScript
... int native new.
Else, delete null public var
In return for const, true, char
…Finally catch byte.
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How do I disable the 'Debug / Close Application' dialog on Windows Vista?
... tests!\n");
exit(1);
}
int runtime_check_handler(int errorType, const char *filename, int linenumber, const char *moduleName, const char *format, ...)
{
printf("Error type %d at %s line %d in %s", errorType, filename, linenumber, moduleName);
exit(1);
}
int main()
{
DWORD dwMode = ...