[輸入]
圖的頂點(diǎn)個(gè)數(shù)N，圖中頂點(diǎn)之間的關(guān)系及起點(diǎn)A和終點(diǎn)B
[輸出]
若A到B無(wú)路徑，則輸出“There is no path” 否則輸出A到B路徑上個(gè)頂點(diǎn)
[存儲(chǔ)結(jié)構(gòu)]
圖采用鄰接矩陣的方式存儲(chǔ)。
[算法的基本思想]
采用廣度優(yōu)先搜索的方法，從頂點(diǎn)A開(kāi)始，依次訪問(wèn)與A鄰接的頂點(diǎn)VA1,VA2,...,VAK, 訪問(wèn)遍之后,若沒(méi)有訪問(wèn)B，則繼續(xù)訪問(wèn)與VA1鄰接的頂點(diǎn)VA11,VA12,...,VA1M，再訪問(wèn)與VA2鄰接頂點(diǎn)...，如此下去，直至找到B，最先到達(dá)B點(diǎn)的路徑，一定是邊數(shù)最少的路徑。實(shí)現(xiàn)時(shí)采用隊(duì)列記錄被訪問(wèn)過(guò)的頂點(diǎn)。每次訪問(wèn)與隊(duì)頭頂點(diǎn)相鄰接的頂點(diǎn)，然后將隊(duì)頭頂點(diǎn)從隊(duì)列中刪去。若隊(duì)空，則說(shuō)明到不存在通路。在訪問(wèn)頂點(diǎn)過(guò)程中，每次把當(dāng)前頂點(diǎn)的序號(hào)作為與其鄰接的未訪問(wèn)的頂點(diǎn)的前驅(qū)頂點(diǎn)記錄下來(lái)，以便輸出時(shí)回溯。
#include<stdio.h>
int number //隊(duì)列類(lèi)型
typedef struct{
int q[20]
the calculator s usage!
after you have inputed 2 operators,choose + - * / function!
But the only situation I did t deal with is that
when you choos + fuction ,and the operaters signs is like this
-A+B,just turn it to B-A!
