//functionality ---- Adding new entry
//functionality ---- Printing the entry based on part number
//functionality ---- Modifying on hand , given the part number
//functionality ---- Print the the complete database 
//functionality ---- Terminate

#include<stdio.h>
#define MAX_PARTS 100

struct part {
	int number;
	char name[40];
	int on_hand;
}dbcreation[MAX_PARTS];

int num_parts  = 0;
int find_part(int);
void insert(void);
void search(void);

int main(void)
{
	char code;
	char answer = 'y';
	//for(;;)
	do {
		printf("You can perform the following Operations :\n ");
		printf("1. Insert a New Part (i)\n");
		printf("2. Search operation (s)\n");
		printf("3. Quit(q)\n");
		printf("Enter operation code: ");
		scanf(" %c", &code);
		
	
		while(getchar()!= '\n')
			;
		
		switch(code) {
			case 'i': 
				insert();
				printf("%d", num_parts);
				printf("\n****Part Details inserted successfully !****\n");
				break;
			case 's': 
				search();
				break;
			case 'q': 
				return 0;
			default : printf("Please enter legal code\n");
		}
	
		printf("\n");
	
		printf("Do you want to continue? (y or n)\n");
		scanf(" %c",&answer);
	} while((answer == 'y') || (answer == 'Y'));
	
	return 0x00;
	
}

int find_part(int part_no) { 
	int i;

	for(i = 0; i < num_parts; i++)
		if(dbcreation[i].number == part_no)
			return i;
	
	return -1;
}

void insert(void) {
	int part_number;

	if(num_parts == MAX_PARTS){
		printf("Database is full; can't add more parts\n");
		return;
	}

	printf("Enter part number : ");
	scanf("%d", &part_number);

	if(find_part(part_number) >= 0) {
		printf("\n Part already exists \n");
		//exit(0);
		return;
	}
	
	dbcreation[num_parts].number = part_number;
	printf("Enter part name : ");
	//gets(dbcreation[num_parts].name);
	scanf("%s", dbcreation[num_parts].name);
	printf("Enter quantity on hand : ");
	scanf("%d", &dbcreation[num_parts].on_hand);
	num_parts = num_parts + 1;	
	printf("%d", num_parts);
}

void search(void) {
	int number;
	int i;

	printf("Enter part number: ");
	scanf("%d", &number);
	i = find_part(number);

	if(i >= 0) {
		printf("Part name : %s\n", dbcreation[i].name);
		printf("Enter quantity on hand: %d\n", dbcreation[num_parts].on_hand);
	}
	else 
		printf("Part Not Found");
}