Code:
// 2nd part footy.cpp : Defines the entry point for the console application.


#include "stdafx.h"
#include "string.h"
#include "stdlib.h"
#define num_teams 4

int menu();	// prototypes for functions to be called by main
void enterteams();
void enterresults();
void printteams();
void leagueTeams();
//File*leagueTeams;
typedef struct			
{ 
	char name[4];
	int played;
	int won;
}team;
team Teams[num_teams];
//once the array has been populated ,you can write the information to a file:
voidwriteFiles()
{
	leagueTeams=fopen("c:\\C Assignment\\teams.dat","wb");
	fwrite(Teams,sizeof(team),num_teams,leagueTeams);
	fclose(leagueTeams);
}
void readFiles(team Teams[])
{
	leagueTeams=fopen("c:\\C Assignmemt\\teams.dat","rb");
	if (leagueTeams == NULL)
	{
		printf("File cannot be opened\a\n");
		exit(0);
		{
		fread(Teams,sizeof(team),num_teams,leagueTeams);
		fclose(leagueTeams);
		}
{
	char name[20];
	int played;
	int won;
	int drawn;
	int lost;
	int goalsFor;
	int goalsAgainst;
	int totalPoints;
	int take_team_input();
    int take_team_name();
    char hometeam[4],awayteam[4];

	
} team;				

team teams[12];	


{
char hometeam[4],awayteam[4];
int x,validteam;
do
{
	validteam = 0;
	printf("\nPlease enter the home team:");
	gets(hometeam);

	for(x = 0; x<num_teams;x++)
	{
		if(strcmp(hometeam,Teams[x].name) ==0)
			validteam == 1;
	}
	if(!validteam)
		printf("\nTeam name not valid,please re-enter\n");
}while(!validteam);
do
{
	validteam = 0;
	printf("\nPlease enter the away team:");
	gets(awayteam);

	for(x = 0; x<num_teams;x++)
	{
		if(strcmp(awayteam,Teams[x].name) ==0)
			validteam == 1;
	}
	if(!validteam)
		printf("\nTeam name not valid,please re-enter\n");
}while(!validteam);


int main (void)			/* main calls menu() and this returns the option choice
						   to the user.  Dependant on that choice, main() will call
						   enterteams(), enterresults(),enterfixtures() or printteams(), or exit the program
						   This will continue, once the three functions have finished
						   their work until the user chooses option 4 - EXIT */
{
	int menuChoice;
	do
	{
		menuChoice = menu();            // function is called and returns a value to menuChoice
		if (menuChoice == 1)
			enterteams();
		if  (menuChoice == 2)
		    enterresults();
		else if (menuChoice == 3)
		    printteams();
	}while (menuChoice != 4);
	system("pause");
	return 0;
}

int menu()					           // offers choices to the user
{
	int choice;

	system("cls");			           // clear screen

	printf("\t\t\tMENU\n\t\t\t----\n\n");
	printf("\t\t1.\tEnter Teams\n");
	printf("\t\t2.\tEnter Results\n");
  	printf("\t\t3.\tDisplay current Table\n");
	printf("\t\t4.\tExit\n\n");
	printf("\t\tPlease enter choice: ");
	scanf("%d", &choice);

	return choice;
}


void enterteams()        //allows input of match fixtures
{
	
	int x;
	//char line[30];
	system("cls");			// clear screen
	for (x = 0; x < 4; x++)	
	{
		// scanf() only accepts one name-- so we use can use sscanf + gets()   
		printf("Enter details for Teams %d\n\n",(x + 1)); 
		printf("Name: ");
		fflush(stdin);
		gets(teams[x].name);		   
		/*printf("Played: ");
		scanf("%d", &teams[x].played);
		printf("Won: ");
		scanf("%d", &teams[x].won);
		printf("Drawn: ");
		scanf("%d", &teams[x].drawn);
		printf("Lost: ");
		scanf("%d", &teams[x].lost);
		printf("Goals For: ");
		scanf("%d", &teams[x].goalsFor);
		printf("Goals Against: ");
		scanf("%d", &teams[x].goalsAgainst);
		printf("Total Points: ");
		scanf("%d", &teams[x].totalPoints);
		printf("Opposition: ");
		scanf("%s", &teams[x].opposition);
		printf("\n");*/

	}
}
void enterresults()
{
	int x,y,hometeam,awayteam;
	for (x = 0; x < 4; x++)
		for (y =x+1; y <4; y++)
		{
			printf("Enter result for match between team %s and team %s: ", teams[x].name, teams[y].name);
			scanf("%d %d", &hometeam, &awayteam);
			teams[x].played++;
			teams[y].played++;
			teams[x].goalsFor = hometeam+teams[x].goalsFor;
			teams[y].goalsFor= awayteam + teams[y].goalsFor;
			teams[x].goalsAgainst = hometeam+teams[x].goalsAgainst;
			teams[y].goalsAgainst = awayteam+ teams[y].goalsAgainst;
			if ( hometeam == awayteam)
			{
				teams[x].totalPoints++;
				teams[y].totalPoints++;
			}
			if  (hometeam>awayteam)
			{
				teams[x].totalPoints+1;
			}
		    if  (hometeam<awayteam)
			{
				teams[y].totalPoints+1;
			}
		}
}

void printteams()
{
int x;
system("cls");			// clear screen	
	
	printf("|--------------------------------------------------------------------------------\\|\n");
	printf("| %-20s | %2s | %2s | %2s | %2s | %2s | %2s | %7s |\n", "Name", "P", "W", "D", "L", "F", "A", "Points" );
	printf("|--------------------------------------------------------------------------------\\|\n");

	for (x = 0; x < 4; x++)
	{
	printf("| %-20s | %2d | %2d | %2d | %2d | %2d | %2d | %7d |\n",teams[x].name, teams[x].played, teams[x].won, teams[x].drawn, teams[x].lost, teams[x].goalsFor, teams[x].goalsAgainst, teams[x].totalPoints);
	}
	printf("|-----------------------------------------------------------------------------------\\|\n");
	system("pause");
}