tu-matrix.cpp

图可以采用邻接矩阵、邻接表等多种方式来存储

# include <stdio.h>
int matrix[6][6];                 /* 图形的邻接数组   */
/*--------建立图形--------*/
void creategraph(int *node,int num)
{
   int from;                      /* 边线的起点       */
   int to;                        /* 边线的终点       */
   int i;
   for ( i = 0; i < num; i++ )       /* 读取边线的回路   */
   {
      from = node[i*2];           /* 边线的起点       */
      to = node[i*2+1];           /* 边线的终点       */
      matrix[from][to] = 1;       /* 存入图形         */
   }
}
/*------主程序: 建立图形后,将邻接数组输出.-----*/
void main()
{
   int node[12][2] = { {1, 2}, {2, 1},  /* 边线数组   */
                       {1, 3}, {3, 1},
                       {2, 3}, {3, 2},
                       {2, 4}, {4, 2},
                       {3, 5}, {5, 3},
                       {4, 5}, {5, 4} };
   int i,j;
   for ( i = 1; i <= 5; i++ )
      for ( j = 1; j <= 5; j++ )
	 matrix[i][j] = 0;            /* 清除图形邻接数组 */
   creategraph(*node,12);         /* 建立图形         */
   printf("图形的邻接数组内容:\n");
   for ( i = 1; i <= 5; i++ )
   {
      for ( j = 1; j <= 5; j++ )
         printf(" %d ",matrix[i][j]);     /* 输出数组内容 */
      printf("\n");                    /*   换行      */
   }
}