[C] Linked List Example

 

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct S_MEMBER
{
	char name[20];
	int age;
	char tel[20];

	struct S_MEMBER* pNext;
};
struct S_MEMBER* g_pMember=NULL;


void Show()
{
	struct S_MEMBER* pMember;
	
	pMember=g_pMember;

	while(1)
	{
		if(NULL == pMember)
		{
			break;
		}
		else
		{
			printf("%s\t %d\t %s\n",pMember->name,pMember->age,pMember->tel);
			
			pMember=pMember->pNext;
		}
	}

}

void Add()
{
	struct S_MEMBER* pMember;

	pMember=(struct S_MEMBER*)malloc(sizeof(struct S_MEMBER));

	printf("Input Name : ");
	scanf("%s",pMember->name);

	printf("Input Age : ");
	scanf("%d",&pMember->age);

	printf("Input Tel : ");
	scanf("%s",pMember->tel);

	pMember->pNext=NULL;

	if(NULL == g_pMember)
	{
		g_pMember=pMember;
	}
	else
	{
		struct S_MEMBER* pT;
		pT=g_pMember;

		while(1)
		{
			if(NULL == pT->pNext)
			{
				pT->pNext=pMember;
				break;
			}
			else
			{
				pT=pT->pNext;
			}
		}

	}
}

void Shell()
{
	char cmd[20];

	printf("Copyright@j0ker\n");

	while(1)
	{
		printf("[r00t@localhost]:~# ");
		scanf("%s",cmd);

		if(0 == strcmp(cmd,"exit"))
		{
			break;
		}
		else if(0 == strcmp(cmd,"add"))
		{
			Add();
		}
		else if(0 == strcmp(cmd,"show"))
		{
			Show();
		}
		else
		{
			printf("Unknown Command\n");
		}
	}

}


int main()
{
	Shell();

	return 0;
}