c.cpp

知道什么是魔幻矩阵吗？它是这样的一个矩阵：首先它是一个奇数阶矩阵；其次无论它的每一行之和还是 //每一列之和还是左对角线之和还是右对角线之和都等于一个相同的数。神奇吧？那么这样的一个魔幻矩阵 //

// c.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream.h>
#include <stdio.h>
#define N 10
void main()
{
 int i,j;
 int n,m;
 int left,right;
 int a[N][N];
 char ch1,ch2;
 L:
 do{
  cout<<"Please enter a positive number between(1-"<<N-1<<"):";
  cin>>m;
  if(m<1||m>N-1)
       cout<<"Invalid number!Again!"<<endl;
  if(m%2!=1)
   cout<<"Are You Sure it is an odd number?Aain!"<<endl;
 }while((m<1||m>N-1)||m%2!=1);
 for(i=0;i<N;i++)
  for(j=0;j<N;j++)
   a[i][j]=0;
 i=0;
 j=m/2;
 n=1;
 a[i][j]=1;
 while(n<m*m)
 {
  i--;
  j++;
  n++;
  if((i<0&&j<m)&&a[m-1][j]==0)
  {a[m-1][j]=n;
    i=m-1;
 j=j;
  }
  else
     if((i<m-1&&j>m-1)&&a[i][0]==0)
  { a[i][0]=n;
     i=i;
  j=0;
  }
  else
        if(a[i][j]!=0&&a[i+2][j-1]==0)
  {a[i+2][j-1]=n;
    i=i+2;
    j=j-1;
  }
  else
     if(i<0&&j>m-1)
     {a[i+2][j-1]=n;
        i=i+2;
     j=j-1;
     }
     else
      a[i][j]=n;
 }
 cout<<"Magic Array:"<<endl;
 for(i=0;i<m;i++)
  for(j=0;j<m;j++)
   a[i][m]+=a[i][j];
 for(j=0;j<m;j++)
  for(i=0;i<m;i++)
   a[m][j]+=a[i][j];
 for(i=0,j=0;i<m,j<m;i++,j++)
  a[m][m]+=a[i][j];
 left=0;
 for(i=0,j=m-1;i<m,j>=0;i++,j--)
  left+=a[i][j];
 right=a[m][m];
 for(i=0;i<m+1;i++)
 {for(j=0;j<m+1;j++)
   printf("%4d",a[i][j]);
  cout<<endl;
 }
 cout<<"left="<<left<<endl;
 cout<<"right="<<right<<endl;
 do{
  cout<<"GO ON?(Y/N)";
  cin>>ch1;
  if((ch1!='Y'&&ch1!='y')&&(ch1!='N'&&ch1!='n'))
   cout<<"Invalid char!Again!"<<endl;
 }while((ch1!='Y'&&ch1!='y')&&(ch1!='N'&&ch1!='n'));
 if(ch1=='Y'&&ch1=='y')
  goto L;
 else
 {
   do{
    cout<<"Really want to EXIT?(Y/N)";
    cin>>ch2;
    if((ch2!='Y'&&ch2!='y')&&(ch2!='N'&&ch2!='n'))
   cout<<"Invalid char!Again!"<<endl;
   }while((ch2!='Y'&&ch2!='y')&&(ch2!='N'&&ch2!='n'));
   if(ch2=='N'&&ch2=='n')
    goto L;
   else
    cout<<"Welcome to come back again!"<<endl;
  }
 }