数据结构作业题，以数偶的形式依次从键盘上输入一串数据。如：(A，B)为从起始结点（其数据场之值为一大写的英文字母 A ），到终止结点（其数据场之值为一大写的英文字母 B）的无向边。最后输入（Z，Z）表示输入结束。请用无向图的邻接多重表存储该无向图，并注意一定要使用动态存储结构-Job title data structure in order to turn a few even in the form of a string of data input from the keyboard. Such as: (A, B) from the starting node (the data field of the value of an uppercase letter A), to the end node (the data field of the value of an uppercase letter B) to the edge of the non- . Last input (Z, Z) represents the input end. Please use the adjacency without multiple tables to store the undirected graph, and note the use of dynamic storage structure must be