有趣的C/C++语言

#include <iostream>
using namespace std;
int main()
{
	int i = 0;
	cout<<sizeof(i++)<<endl;
	cout<<i<<endl;
	//4
	//0	
}



#include <iostream>
using namespace std;
int main()
{
	unsigned int a = 3;
	int b = -6;
	cout<<( a+b>6? "yes" : "no")<<endl;
	//"yes";
}




#include <stdio.h>
#include <unistd.h>
int main()
{
	for(int i=0;i<2;i++)
	{
		fork();
		printf("+");//+++ +++ ++;
	}
	return 0;
}



#include <iostream>
using namespace std;
int main()
{
	int a = 1;
	int s = 0;
	switch(a)
		{
			s = 10;
			case 1:cout<<s<<endl;break;//s=0;
		}
		return 0;
}



#include <iostream>
#include <fstream>
using namespace std;
int main()
{	
	int s = 0;
	for(int i=0;i<4;i++)
	{
		switch(i)
		{
			default :s+=4;
			case 1:s+=1;break;
			case 2:s+=2;break;
			case 3:s+=3;
		}
	}
	cout<<s<<endl;//11
	return 0;
}


#include <iostream>
using namespace std;
int main()
{
	int s = (1,3);
	cout<<s<<endl;
	//s=3;
	return 0;
}

#include <iostream>
using namespace std;
int main()
{
	int s = 0;
	s = 1,2;
	cout<<s<<endl;
	//s=1;
	return 0;
}


#include <iostream>
using namespace std;
int main()
{
	int a = 3;
	a+=a-=a*a;
	cout<<a<<endl;//-12.
	return 0;
}