进阶实验4-3.1 家谱处理 (30分)

 

 

 解题思路：采用结构体来存储家谱

其中需要注意的是祖先和后代的判断

#include <stdio.h>
#include <string.h>
typedef char Element[11];
typedef struct {
    Element Name;
    int parent;
    int space;
} Genealogy;
Genealogy G[100];
int n,m;
void Initial();
int GetWord(Element word);
int FindPos(Element x);
int JudgeChild(int x,int y);
int JudgeParent(int x,int y);
int JudgeSibling(int x,int y) ;
int JudgeDescendant(int x,int y);
int JudgeAncestor(int x,int y);
void Judge();

int main(int argc,char **argv) {
    Initial();
    Judge();
    return 0;
}
int GetWord(Element word) {
    char c;
    int p=0;
    int space=0;
    scanf("%c",&c);
    while(!isalpha(c)&&c!=' ')
        scanf("%c",&c);
    while(c==' ') {
        space++;
        scanf("%c",&c);
    }
    while(isalpha(c)) {
        word[p++]=c;
        scanf("%c",&c);
    }
    if(c=='
') {
        word[p]='';
        return space;
    }

}
int FindPos(Element x) {
    int i;
    for(i=0; i<n; i++) {
        if(strcmp(x,G[i].Name)==0)
            return i;
    }
}
//X is a child of Y
int JudgeChild(int x,int y) {
    if(G[x].parent==y)
        return 1;
    return 0;
}
//X is the parent of Y
int JudgeParent(int x,int y) {
    return JudgeChild(y,x);
}
//X is a sibling of Y
int JudgeSibling(int x,int y) {
    if(G[x].parent==G[y].parent)
        return 1;
    return 0;
}
//X is a descendant of Y
int JudgeDescendant(int x,int y) {
    if(!y)
        return 1;
    while(G[x].parent!=-1&&G[x].parent!=y)
        x=G[x].parent;
    if(G[x].parent==-1)
        return 0;
    if(G[x].parent==y)
        return 1;
}
//X is an ancestor of Y
int JudgeAncestor(int x,int y) {
    return JudgeDescendant(y,x);
}
void Initial() {
    Element word;
    int i,j;
    scanf("%d %d",&n,&m);
    for(i=0; i<n; i++) {
        G[i].space=GetWord(word);
        strcpy(G[i].Name,word);
        if(G[i].space==0)
            G[i].parent=-1;
        else {
            for(j=i-1; j>=0; j--) {
                if(G[i].space-G[j].space==2) {
                    G[i].parent=j;
                    break;
                }
            }
        }
    }
}
void Judge() {
    Element n1,n2,c1,c2,c3,c4;
    int i;
    for(i=0; i<m; i++) {
        int flag=0;
        scanf("%s%s%s%s%s%s",n1,c1,c2,c3,c4,n2);
        int x=FindPos(n1),y=FindPos(n2);
        if(!strcmp(c3,"child"))
            flag=JudgeChild(x,y);
        else if(!strcmp(c3,"parent"))
            flag=JudgeParent(x,y);
        else if(!strcmp(c3,"sibling"))
            flag=JudgeSibling(x,y);
        else if(!strcmp(c3,"descendant"))
            flag=JudgeDescendant(x,y);
        else if(!strcmp(c3,"ancestor"))
            flag=JudgeAncestor(x,y);
        if(flag)
            printf("True
");
        else
            printf("False
");
    }
}