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#include<stdio.h>

#include<string.h>

#define SIZE 100

int addword(char p[][20], int n);

int findword(char p[][20], int n, char *f);

int delword(char p[][20], int n, char *f);

void display(char p[][20], int n);

void menu();

int main()

{

char myword[100][20];

char word[20];

char choice;

int count = 0;

int pos = -1;

do {

menu();

printf("Please input your choice:");

scanf("%c", &choice);

getchar();

switch (choice)

{

case '1':

count = addword(myword, count);

break;

case '2':

printf("Please input what you are looking for:");

gets(word);

pos = findword(myword, count, word);

if (pos != -1)

printf("It's the %d word\n", pos + 1);

break;

case '3':

printf("Please input what you want to delete:");

gets(word);

count = delword(myword, count, word);

break;

case '4':

display(myword, count);

break;

case '0':choice='0';break;

default:

printf("Error input,please input your choice again!\n");

}

} while (choice);

return 0;

}

void menu( )

{

printf("----------1.增加单词------------\n");

printf("----------2.查询单词------------\n");

printf("----------3.删除单词------------\n");

printf("----------4.显示单词------------\n");

printf("-------------0.退出-------------\n");

}

int addword(char p[][20], int n)

{

int i, j;

char pos = -1;

char flag = 'y';

char tmp[20];

while (flag == 'y' || flag == 'Y')

{

if (n == SIZE)

{

printf("Word list is full\n");

break;

}

else

{

printf("Iput your word:");

gets(tmp);

pos = findword(p, n, tmp);

if (pos != -1)

{

printf("the word exits!\n");

break;

}

else

{

if (n)

{

for (i = 0;i < n && strcmp(tmp, p[i])>0;i++);

for (j = n;j > i;j--)

strcpy(p[j], p[j - 1]);

strcpy(p[i], tmp);

n++;

}

else

{

strcpy(p[0], tmp);

n = 1;

}

}

}

printf("Another word?(y/n):");

scanf("%c", &flag);

getchar();

}

return n;

}

int findword(char p[][20], int n, char *f)

{

int i;

int pos = -1;

for (i = 0;i < n;i++)

{

if (!strcmp(p[i], f))

{

pos = i;

break;

}

}

return pos;

}

int delword(char p[][20], int n, char *f)

{

int i;

int pos = -1;

pos = findword(p, n, f);

if (pos == -1)

printf("It'not in myword list!\n");

else

{

for (i = pos;i < n - 1;i++)

{

strcpy(p[i], p[i + 1]);

}

n = n - 1;

}

return n;

}

void display(char p[][20], int n)

{

int i;

if (n)

{

for (i = 0;i < n;i++)

puts(p[i]);

}

else

printf("There is no word in myword list!\n");

}