Miscellany

/*A little football team league table program*/  /*required libs*/  #include <stdio.h>#include <stdlib.h>/*A team structure*/typedef struct team {	char name[31];	int games, points, goalsFor, goalsAgainst;} Team;/*Protocole*/Team **getnewteamArray(int noOfTeams, FILE *teamsFile);void *xmalloc(size_t n);void addNewTeam(Team **teamArray,int noOfTeams);int main () {	int menOption=0, noOfTeams=0;	char name[31];	int games, points, goalsFor, goalsAgainst;	Team **teamArray = NULL;	FILE *teamsFile;	teamsFile = fopen("./teams", "rw");		if (teamsFile == NULL) {		printf("File could not be opened\n");		exit(5);	}	while (fscanf(teamsFile, "%s%i%i%i%i",&name, &games, &points, &goalsFor, &goalsAgainst) != EOF) noOfTeams++;		printf("\n\n%i\n\n",noOfTeams);		if (noOfTeams == 0) {		fprintf(stdout,"There are currently no teams in the system, please add a new one\n");		addNewTeam(teamArray,noOfTeams);		noOfTeams++;	} else {		teamArray = getnewteamArray(noOfTeams, teamsFile);	}		while ((menOption != 5) && (menOption != 6)) {		do {			fprintf(stdout,"Please enter the number of the option you would like to use:\n");			fprintf(stdout,"1.\tAdd a new team.\n");			fprintf(stdout,"2.\tDelete a team.\n");			fprintf(stdout,"3.\tAdd a result.\n");			fprintf(stdout,"4.\tPrint a league table.\n");			fprintf(stdout,"5.\tExit without saving.\n");			fprintf(stdout,"6.\tSave and exit.\n");			scanf("%i", &menOption);		} while ((menOption <= 0) || (menOption > 6));				if (menOption == 1) {			printf("%i", noOfTeams);			addNewTeam(teamArray,noOfTeams);			noOfTeams++;		}	}}void addNewTeam(Team **teamArray,int noOfTeams) {	noOfTeams++;	Team **tmp;	if ((tmp = realloc(teamArray, noOfTeams * sizeof *tmp)) == NULL) {  	 /* Possible free on ip? Depends on what you want */    fprintf(stderr, "ERROR: realloc failed");	} else { 		printf("\n\n\n\n\n\n\tet\n\n\n\n\n\n");		teamArray = tmp;	}	teamArray[noOfTeams - 1] = xmalloc(sizeof *teamArray[noOfTeams - 1]);	do {		fprintf(stdout, "Enter the team name:");		scanf("%s", &teamArray[noOfTeams -1]->name);	} while (teamArray[noOfTeams -1]->name == 0);	do {		fprintf(stdout, "Enter the number of games played:");		scanf("%i", &teamArray[noOfTeams -1]->games);	} while (teamArray[noOfTeams -1]->games < 0);	do {		fprintf(stdout, "Enter the number of points:");		scanf("%i", &teamArray[noOfTeams -1]->points);	} while (teamArray[noOfTeams -1]->points < 0);	do {		fprintf(stdout, "Enter the number of goals for:");		scanf("%i", &teamArray[noOfTeams -1]->goalsFor);	} while (teamArray[noOfTeams -1]->goalsFor < 0);	do {		fprintf(stdout, "Enter the number of goals against:");		scanf("%i", &teamArray[noOfTeams -1]->goalsAgainst);	} while (teamArray[noOfTeams -1]->goalsAgainst < 0);			fprintf(stdout, "%s %i %i %i %i\n", teamArray[noOfTeams -1]->name,  teamArray[noOfTeams -1]->games,  teamArray[noOfTeams -1]->points,  teamArray[noOfTeams -1]->goalsFor, teamArray[noOfTeams -1]->goalsAgainst);		}Team **getnewteamArray(int noOfTeams, FILE *teamsFile) {	Team **teamArray = NULL;	char name[31];	int games, points, goalsFor, goalsAgainst, i=0;	rewind(teamsFile);	teamArray = xmalloc(noOfTeams * sizeof *teamArray);	for (i=0;i<noOfTeams;i++) {		teamArray[i] = xmalloc(sizeof *teamArray[i]);		fscanf(teamsFile, "%s%i%i%i%i",&teamArray[i]->name, &teamArray[i]->games, &teamArray[i]->points, &teamArray[i]->goalsFor, &teamArray[i]->goalsAgainst);		fprintf(stdout, "%s %i %i %i %i\n", teamArray[i]->name,  teamArray[i]->games,  teamArray[i]->points,  teamArray[i]->goalsFor, teamArray[i]->goalsAgainst);	}		if (noOfTeams == 0) {		fprintf(stdout,"There are currently no teams in the system, please add a new one\n");		} else {		}		//teamArray = xmalloc();	return teamArray;}void *xmalloc(size_t n) {	void *p = malloc(n);	if (p == NULL) {		fprintf(stderr, "Out of memory!\n");		exit(-1);	}}ed@dangermouse:~/General/Uni/c2/week7$ ./code3test1 1 2 3 4test2 1 2 3 4test3 1 2 3 4Please enter the number of the option you would like to use:1.      Add a new team.2.      Delete a team.3.      Add a result.4.      Print a league table.5.      Exit without saving.6.      Save and exit.13        etEnter the team name:test231Enter the number of games played:2Enter the number of points:3Enter the number of goals for:3Enter the number of goals against:2test231 2 3 3 2Please enter the number of the option you would like to use:1.      Add a new team.2.      Delete a team.3.      Add a result.4.      Print a league table.5.      Exit without saving.6.      Save and exit.1*** glibc detected *** ./code: double free or corruption (fasttop): 0x0804b170 ***======= Backtrace: =========/lib/tls/i686/cmov/libc.so.6[0xb7e648bd]/lib/tls/i686/cmov/libc.so.6[0xb7e66194]/lib/tls/i686/cmov/libc.so.6(__libc_realloc+0xff)[0xb7e66cdf]./code[0x804894a]./code[0x80488f6]/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7e138cc]./code[0x8048601]======= Memory map: ========08048000-0804a000 r-xp 00000000 08:16 1998884    /home/ed/General/Uni/c2/week7/code0804a000-0804b000 rw-p 00001000 08:16 1998884    /home/ed/General/Uni/c2/week7/code0804b000-0806c000 rw-p 0804b000 00:00 0          [heap]b7c00000-b7c21000 rw-p b7c00000 00:00 0 b7c21000-b7d00000 ---p b7c21000 00:00 0 b7de7000-b7df1000 r-xp 00000000 08:15 1966147    /lib/libgcc_s.so.1b7df1000-b7df2000 rw-p 00009000 08:15 1966147    /lib/libgcc_s.so.1b7dfd000-b7dfe000 rw-p b7dfd000 00:00 0 b7dfe000-b7f2b000 r-xp 00000000 08:15 1998885    /lib/tls/i686/cmov/libc-2.4.sob7f2b000-b7f2d000 r--p 0012c000 08:15 1998885    /lib/tls/i686/cmov/libc-2.4.sob7f2d000-b7f2f000 rw-p 0012e000 08:15 1998885    /lib/tls/i686/cmov/libc-2.4.sob7f2f000-b7f32000 rw-p b7f2f000 00:00 0 b7f32000-b7f56000 r-xp 00000000 08:15 1998893    /lib/tls/i686/cmov/libm-2.4.sob7f56000-b7f58000 rw-p 00023000 08:15 1998893    /lib/tls/i686/cmov/libm-2.4.sob7f60000-b7f65000 rw-p b7f60000 00:00 0 b7f65000-b7f7e000 r-xp 00000000 08:15 1966102    /lib/ld-2.4.sob7f7e000-b7f80000 rw-p 00018000 08:15 1966102    /lib/ld-2.4.sobfc87000-bfc9c000 rw-p bfc87000 00:00 0          [stack]ffffe000-fffff000 ---p 00000000 00:00 0          [vdso]4Aborted (core dumped)