#include<stdio.h>
#include<conio.h>
#include<ctype.h>
#include<string.h>
#include<stdlib.h>
#include<time.h>

int menu(void);
void Input(void);
void Output(void);
void Search(void);
void Save(void);
void Load(void);
void Display(int i);
void Del(void);
char More(int found);

char name[80][20];
char number[80][20];
int t=0;

int main(void)
{
	int choise;
	char ch;

	do{
		choise = menu();
		switch(choise){
			case 1: Input();
				break;
			case 2: Output();
				break;
			case 3: Search();
				break;
			case 4: Del();
				break;
			case 5: Save();
				break;
                        case 6: Load();
		}
	}while(choise!=7);

	printf("\nÁ¾·á ÇϽðڽÀ´Ï±î? (Y/N) ");
	ch=getche();
	if(toupper(ch)=='N')	menu();

	return 0;
}

int menu(void)
{
	char i;
        do{
	clrscr();
	struct tm *systime;
	time_t t;

	t = time(NULL);
	systime = localtime(&t);

	printf("Time is %.2d:%.2d:%.2d\n", systime->tm_hour,systime->tm_min,systime->tm_sec);
	printf("Date: %.2d/%.2d/%.2d\n", systime->tm_year-100,systime->tm_mon+1,systime->tm_mday);

	puts("\n======================");
	puts("\t1.Input");
	puts("\t2.Output");
	puts("\t3.Search");
        puts("\t4.Del");
	puts("\t5.Save");
	puts("\t6.Load");
	puts("\t7.Quit");
	puts("======================");
	printf("-> ");
        i=getche();
	}while(!(i>'1' || i<'7'));

	return i-'0';
}

void Input(void)
{
	int i=t;
	while(i<80){puts("\n°ø¹é¾øÀÌ ½áÁÖ¼¼¿ä.(Enter to Quit)");
        	printf("Enter name: ");
		gets(name[i]);
		if(!*name[i]) break;
                printf("Enter number: ");
		gets(number[i++]);

	}
        t=i;
}


void Output(void)
{
	int i=0,count=0;
        char ch;
	while(i<80){
		Display(i);
		i++;
		if(count++==10){
			printf("\nMore? (Y/N) ");
			ch = getche();
			if(toupper(ch)=='N')	break;
			count=0;
		}
        }
        	
}


void Search(void)
{
	char j,ch[20];
	int i=0,found=0;
	puts("\n\n1.name search");
	puts("2.number search");
	puts("3.menu");
	j=getche();

	if(j=='1'){
		printf("\nname? ");
		gets(ch);
                while(i<80){
			if(!strcmp(ch,name[i])){
				Display(i);
				found=1;
                        }
			i++;
			}
	}
	else if(j=='2'){
		printf("\nnumber? ");
		gets(ch);
                while(i<80){
			if(!strcmp(ch,number[i])){
				Display(i);
				found=1;
                        }
			i++;
                }
	}
	if(toupper(More(found))=='Y')	Search();
}

void Display(int i)
{
	printf("\n%s, %s\n",name[i],number[i]);
}

char More(int found)
{
	char j;
	switch(found){
		case 1:
		case 3: break;
		case 0:
		case 2: printf("\nNot found");
        }
        	
	printf("\nMore? (Y/N) ");
	j=getche();
        return j;
}
void Del(void)
{       
	char j,ch[20];
	int i=0,found=2;
	puts("\n1.name search");
	puts("2.number search");
	puts("3.menu");
	j=getche();

	if(j=='1'){
		printf("\nname? ");
		gets(ch);
                while(i<80){
			if(!strcmp(ch,name[i])){
				printf("Really Del? (Y/N) ");
				if(toupper(getche())=='Y'){
					*name[i]='\0';
					*number[i]='\0';
                                        found = 3;
				}
			}
			i++;
		}
	}
	else if(j=='2'){
		printf("\nnumber? ");
		gets(ch);
                while(i<80){
			if(!strcmp(ch,number[i])){
				printf("Really Del? (Y/N) ");
				if(toupper(getche())=='Y'){
					*name[i]='\0';
					*number[i]='\0';
                                        found = 3;
				}
			}
			i++;
                }
	}
	if(toupper(More(found))=='Y')	Del();
}

void Save(void)
{
	FILE *fp;
	int i=0;
	if((fp=fopen("phone.txt","w+"))==NULL){
		printf("\nConnot open file");
		exit(1);
	}
	printf("\nÀúÀå ÇϽðڽÀ´Ï±î? (Y/N)");
	if(toupper(getche())=='Y'){
		while(i<80){
			fprintf(fp,"%s %s\n",name[i],number[i]);
       	        	if(!*name[i])	break;
        	       	i++;
		}
        }
}

void Load(void)
{
	FILE *fp;
	int i=0;

	if((fp=fopen("phone.txt","r"))==NULL){
		printf("\nConnot open file");
		exit(1);
	}
	printf("\nºÒ·¯ ¿À½Ã°Ú½À´Ï±î? (Y/N)");
	if(toupper(getche())=='Y'){
		while(!feof(fp)){
			fscanf(fp,"%s%s\n",name[i],number[i]);
			i++;
	        }
	}
        t=i;
}