第二周作业1

#include<iostream>

#include<iomanip>
using namespace std;

int main()
{
	bool flag = true;
	cout<<flag<<endl;
	cout<<boolalpha<<flag<<endl;
    cout<<flag + 5<<endl;
	flag = 0;
	cout<<	"执行语句 flag=0;后flag的值为:"<<boolalpha<<flag<<endl;
	flag = 0.0;
	cout<<"执行语句 flag=0.0;后flag的值为:"<<boolalpha<<flag<<endl;

	return 0;
}

#include<iostream>

using namespace std;

int main()
{
	int a,b,c,d;
	a=4;
	b=a;
	a=5;
	c=d=6;
	c*=a;
	d %=a+b;
	cout<<"a="<<a<<endl
	    <<"b="<<b<<endl
		<<"c="<<c<<endl
		<<"d="<<d<<endl;

    return 0;
}

#include<iostream>

using namespace std;

int main()

{
	short i,j,m,n;
	i=1000;
	j=1000;
	m=j+i;
	n=i*j;
	cout<<"m="<<m<<endl;
	cout<<"n="<<n<<endl;

	return 0;

}

#include<iostream>

using namespace std;

int main()

{
	long i,j,m,n;
	i=1000;
	j=1000;
	m=j+i;
	n=i*j;
	cout<<"m="<<m<<endl;
	cout<<"n="<<n<<endl;

	return 0;

}

#include<iostream>

using namespace std;

int main()

{
	int i=6,j,k,temp;
	j=++i;
	k=i++;
	++i=1;
	cout<<"i="<<i<<endl
	    <<"j="<<j<<endl
		<<"k="<<k<<endl;

	return 0;

}

#include<iostream>

using namespace std;

int main()

{
	char ch;
	cout<<"please input acharacter:";
	cin>>ch;
	ch=ch>'a'&&ch<='z'?ch-'a'+'A':ch;
	//上述语句等价于ch=ch>='a'&&ch<='z'?ch-32:ch;
	cout<<"The result is:"<<ch<<endl;

	return 0;

}

#include<iostream>

using namespace std;
int main()
{
	int ab,ac;
	double b=3.14;
	char c='A';
	ab=int(b);
	ac=int(c);
	cout<<"b="<<b<<endl;
	cout<<"ab="<<ab<<endl;
	cout<<"ac="<<ac<<endl;
	 
	return 0;

}