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王惠宇第三次上机作业/01.cpp

@@ -0,0 +1,30 @@
+#include<iostream.h>
+int main()
+{
+	int i,a,b,c;
+	float sum,average;
+	sum=0;
+	i=0;
+	average=0;
+	b=0;
+	c=0;
+	cout<<"请输入整数：\n";
+	cin>>a;
+	while(a!=0)
+	{
+		sum=sum+a;
+		i++;
+		if(a>0)
+			b=b+1;
+		else
+			c=c+1;
+		cout<<"请输入整数：\n";
+		cin>>a;
+	}
+	average=sum/i;
+	cout<<"有正数："<<b<<"个\n";
+    cout<<"有负数："<<c<<"个\n";
+	cout<<"平均值为："<<average<<endl;
+	return 0;
+}
+

王惠宇第三次上机作业/02.cpp

@@ -0,0 +1,14 @@
+#include<iostream.h>
+int main()
+{
+	int x,a,b,c;
+	for(x=100;x<1000;x++)
+	{
+		a=x/100;
+        b=(x%100)/10;
+     	c=x%10;
+		if(x==a*a*a+b*b*b+c*c*c)
+     	cout<<x<<" ";
+	}
+	return 0;
+}

王惠宇第三次上机作业/03.cpp

@@ -0,0 +1,26 @@
+#include<iostream.h>
+int main()
+{
+	int x,sum,a;
+	for(x=1;x<1000;x++)
+	{
+		sum=0;
+	    for(a=1;a<x;a++)
+		{
+			if(x%a==0)
+				sum=sum+a;	
+		}
+		    if(sum==x)
+			{
+				cout<<x<<" its factors are ";
+	                for(a=1;a<x;a++)
+					{
+			        if(x%a==0)
+                    cout<<a<<','; 	
+					}
+					cout<<'\n';
+			}
+	}	  
+	return 0;
+}
+

王惠宇第三次上机作业/04.cpp

@@ -0,0 +1,24 @@
+#include<iostream.h>
+int main()
+{
+	int m,n,a,b,p,q;
+	cout<<"请输入两个正整数m,n:\n";
+	cin>>m>>n;
+	a=m;
+	b=n;
+	while(a%b!=0)
+	{
+		p=a%b;
+		a=b;
+        b=p;
+	}
+	for(q=1;q<=m*n;q++)
+		if((q%m==0)&&(q%n==0))
+			break;
+	cout<<"最大公约数："<<b<<endl;
+	cout<<"最小公倍数："<<q<<endl;
+	return 0;
+}
+
+
+

王惠宇第三次上机作业/05_1.cpp

@@ -0,0 +1,19 @@
+#include<iostream.h>
+int main()
+{
+	int i,j,k;
+	for(i=1;i<=6;i++)
+	{
+		for(j=1;j<=(6-i)*2;j++)
+		{
+			cout<<' ';
+		}
+			cout;
+			for(k=i;k>0;k--)
+			cout<<k<<' ';
+		    cout<<'\n';
+        
+	}
+	return 0;
+}
+

王惠宇第三次上机作业/05_2.cpp

@@ -0,0 +1,19 @@
+#include<iostream.h>
+int main()
+{
+	int i,j,k;
+	for(i=1;i<=6;i++)
+	{
+		for(j=1;j<i*2;j++)
+		{
+			cout<<' ';
+        }
+		    cout;
+			for(k=1;k<=(7-i);k++)
+			cout<<k<<' ';
+			cout<<'\n';
+	}
+    return 0;
+}
+
+		  

王惠宇第三次上机作业/06.cpp

@@ -0,0 +1,20 @@
+#include<iostream.h>
+#include<math.h>
+int main()
+{
+	int Amount,Years;
+	float yrate,mrate,mpay,tpay;
+	cout<<"Loan Amount:";
+	cin>>Amount;
+	cout<<"Number of Years:";
+	cin>>Years;
+	cout<<"Interest Rate"<<'	'<<"Monthly Payment"<<'	'<<"Totally Payment\n";
+    for(yrate=0.05000;yrate<=0.08000;yrate=yrate+0.00125)
+	{
+		mrate=yrate/12;
+		mpay=(Amount*mrate)/(1-1/pow((1+mrate),Years*12));
+		tpay=mpay*12*Years;
+	cout<<yrate*100<<"%"<<"		"<<mpay<<"		"<<tpay<<endl;
+	}
+    return 0;
+}

王惠宇第三次上机作业/07.cpp

@@ -0,0 +1,30 @@
+#include <iostream.h>
+int main ()
+{
+	int  d,p,h,t,a,b,c,f;
+	for (d=4;d>=1;d--)
+	{
+		for (p=4;p>=1;p--)
+		{
+			for (t=4;t>=1;t--)
+			{
+				for (h=4;h>=1;h--)
+				{
+					a=((d==1)+(h==4)+(p==3));
+					b=((d==4)+(h==1)+(p==2)+(t==3));
+					c=((d==3)+(h==4));
+					f=((d==3)+(h==2)+(p==1)+(t==4));
+					if (a==1&&b==1&&c==1&&f==1&&d!=p&&d!=h&&p!=h&&p!=t&&h!=t&&t!=d)
+					{
+						cout <<"洞庭湖第" <<d <<"大"<<endl;
+						cout <<"鄱阳湖第" <<p <<"大"<<endl;
+						cout <<"洪泽湖第" <<h <<"大"<<endl;
+						cout <<"太湖第"   <<t <<"大"<<endl;
+					}
+					break;
+				}
+			}
+		}
+	}
+	return 0;
+}