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6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
...nclude<stdio.h>
_____
hello2.c
#include<stdio.h>
main(){
int x=0,y[14],*z=&y;*(z++)=0x48;*(z++)=y[x++]+0x1D;
*(z++)=y[x++]+0x07;*(z++)=y[x++]+0x00;*(z++)=y[x++]+0x03;
*(z++)=y[x++]-0x43;*(z++)=y[x++]-0x0C;*(z++)=y[x++]+0x57;
*(z++)=y[x++]-0x08;*(z++)=y[x++]+0x0...
std::string的截取字符串的方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...法例如截取ip:port，代码如下：std::string ip("127.0.0.1:8888");int index = ip.find_last_of(':'); ipip.substr(0, index)....例如截取ip:port，代码如下：
std::string ip("127.0.0.1:8888");
int index = ip.find_last_of(':');
//ip
ip.substr(0, index).c_str();
//port
ip.substr(in...
error: ‘uint16_t’ does not name a type - C/C++ - 清泛网 - 专注C/C++及内核技术
error: ‘uint16_t’ does not name a type#include <stdint.h> 解决。 ** * @file stdint.h * Copyright 2012, 2013 MinGW.org project * * Permission is hereby ...#include <stdint.h> 解决。
/**
* @file stdint.h
* Copyright 2012, 2013 MinGW.org project
*
* Permission is hereby granted, ...
warning C4172: returning address of local variable or temporary - C/C+...
... of local variable or temporary 返回单词出现的行号set const set<int> & TextQuery::R...warning C4172: returning address of local variable or temporary
//返回单词出现的行号set
const set<int> & TextQuery::RunQuery(string word) const
{
map< string,set<int> >::c...
与迭代器失效相关的错误，例如:0x008D1127 处有未经处理的异常(在 prog34.e...
...d::endl;
//迭代器失效举例-避免存储end操作返回的迭代器
int main()
{
vector<int> ivec;
ivec.push_back(3);
ivec.push_back(5);
ivec.push_back(7);
vector<int>::iterator end = ivec.end();
for(vector<int>::iterator first = ivec.begin();first != end;++first)
cout<<...
“非常量引用的初始值必须为左值”原因分析及解决 - C/C++ - 清泛网 - 专注...
...果地址都没有，怎么可能作为非常量引用的值呢，例如：int& a = 5; 错误const i...引用变量指向了一个不能取址的值（即左值）导致的，如果地址都没有，怎么可能作为非常量引用的值呢，例如：
int& a = 5; //错误
const int& a = 5; /...
register int i;的含义 - c++1y / stl - 清泛IT社区，为创新赋能！
register声明的作用是为了提高效率。
它明确要求CPU把变量始终保存在寄存器里面，直至它消亡。
不过现代编译器都很厉害，根本不需要你多此一举。
所以根本就极少用。大多数情况下，你声明了也没有用，因为编译器不会...
error: ‘uint16_t’ does not name a type - c++1y / stl - 清泛IT社区，为创新赋能！
#include <stdint.h> 解决。/**
* @file stdint.h
* Copyright 2012, 2013 MinGW.org project
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Softw...
Should I instantiate instance variables on declaration or in the constructor?
...tructor or constructors for the class. The initialization code is inserted into a constructor in the order it appears in the source code, which means that a field initializer can use the initial values of fields declared before it.
Additionally, you might want to lazily initialize your field. In c...
Implicit “Submit” after hitting Done on the keyboard at the last EditText
...Listener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
submit_btn.performClick();
return true;
}
return false;
}
});
Where submit_btn is your...