pas_tri.cpp

来自「在c环境下的对数据结构进行讲解,包含有例题及答案」· C++ 代码 · 共 40 行

 //pas_tri.cpp
 #include <iostream.h>			//cout
 #include <conio.h>			//getch()
 const N=7;
 void main()
 { int a[N][N]={0},i,j;
   cout << "设置第一列值均为1:\n";
   for (i=0;i<N;i++)
   a[i][0]=1;
   //输出
   for (i=0;i<N;i++)
   { for (j=0;j<N;j++)
     cout << a[i][j]<<' ';
     cout << endl;
   }
   //处理各元素值
   for (i=1;i<N;i++)
   for (j=1;j<N;j++)
   a[i][j]=a[i-1][j-1]+a[i-1][j];
   cout << "\n数组内值如下:\n";
   for (i=0;i<N;i++)
   { for (j=0;j<N;j++)
     { cout.width(3);
       cout << a[i][j];
     }
     cout << endl;
   }
   cout<<"\n输出的帕斯卡三角形如下:\n";
   for (i=0;i<N;i++)
   { cout.width(2*(N-i));
     for (j=0;j<N;j++)
     if (a[i][j]!=0)
     { cout << a[i][j];
       cout.width(4);
     }
     cout << endl;
   }
   getch();
 }