通讯录C语言程序

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#define MAX_WORD_LENGTH 20
#define MAX_WORD_COUNT 20
intcpstring( char* desstr, char* str1, char* str2 )
{
if ( str1 >= str2 )
{
return -1;
}
while ( str1 != str2 )
{
*desstr = *str1;
str1++;
desstr++;
}
*desstr = '\0';
return 0;
}
intstrcompare( char* str1, char* str2 )
{
while ( str1!='\0' && str2!='\0' &&isalpha(*str1) &&isalpha(*str2) && *str1==*str2 ) {
str1++;
str2++;
}
if ( (str1=='\0' && str2=='\0')||!isalpha(*str1)||!isalpha(*str2) )
{
return 0;
}
else
{
return -1;
}
}
char* get1stword( char* string )
{
char* pend = string;
while ( isalpha(*pend) )
{
pend++;
}
return pend;
}
char* getwordfrommainstr( char* mainstr, char* substr )
{
char* pm = mainstr;
char* ps = substr;
char* pend = 0;
if ( *pm == '\0' )
{
return NULL;
}
while ( 1 )
{
if ( strcompare( pm, ps ) == 0 )
{
return pm;
}
else
{
pend = get1stword( pm );
if ( *pend == '\0' )
{
return NULL;
}
pm = ++pend;
}
}
}
intischecked( char** checkedword, char* str )
{
intwordcount;
char* p;
for ( wordcount=0; wordcount<MAX_WORD_COUNT; wordcount++ )
{
if ( *(checkedword+wordcount*MAX_WORD_LENGTH)=='\0' )
{
return -1;
}
p = getwordfrommainstr(checkedword+wordcount*MAX_WORD_LENGTH, str );
if ( p != NULL )
{
if ( strcompare( p, str ) == 0 )
{
return 0;
}
}
}
if ( p == NULL )
{
return -1;
}
}
intsavetochecked( char** checkedword, char* str )
{
intwordcount;
for(wordcount=0;wordcount<MAX_WORD_COUNT&&*(checkedword+wordcount*MAX_WORD_ LENGTH)!='\0'; wordcount++ )
{
}
intwordlength;
char* p1 = str;
char* p2 = checkedword+wordcount*MAX_WORD_LENGTH;
for ( wordlength=0; wordlength<MAX_WORD_LENGTH && (*p1)!='\0'; wordlength++,p1++,p2++ ) {
*p2 = *p1;
}
*p2 = '\0';
return 0;
}
intshowcheckedword( char** checkedword )
{
intwordcount = 0;
printf( "-----\n" );
while ( wordcount< MAX_WORD_COUNT*MAX_WORD_LENGTH )
{
wordcount++;
}
printf( "-----\n" );
return 0;
}
int main()
{
char s1[]="this is a test, test";
char s2[]="it is a great test";
charcheckedword[MAX_WORD_COUNT][MAX_WORD_LENGTH];
memset(checkedword, '\0', MAX_WORD_COUNT*MAX_WORD_LENGTH );
char* p1 = s1;
char word[MAX_WORD_LENGTH];
while ( *p1 != '\0' )
{
memset( word, '\0', MAX_WORD_LENGTH );
char* pend;
pend = get1stword( p1 );
cpstring( word, p1, pend );
if ( 0 == ischecked( checkedword, word ) )
{
p1 = ++pend;
continue;
}
char* p = getwordfrommainstr( s2, word );
if ( p == NULL )
{
printf( "=======没有找到========\n%s\n", word );
}
else
{
printf( "=======已经找到========\n%s\n", word );
}
p1 = ++pend;
}
return 0;
}。