我正在创建一个双指针并发送地址以分配内存,这需要一个三重指针。另外,我正在创建单指针(目标和助攻)并发送它们的地址来分配内存,这需要双指针。我认为问题在于内存分配,但我无法弄清楚。每当我运行 readLinesFromFile 函数时,我都会保持段错误。当我尝试自己运行 allocateMemory 函数时,它不会出现段错误。问题也可能出在 readLinesFromFile 函数中
int main (int argc, char **argv)
{
int numPlayers = 0;
if (argc != 3)
{
printf("Missing text file");
return 0;
}
char **playerNames;
int *goals, *assists;
FILE *filePtr = fopen(argv[1],"r");
if(filePtr == NULL)
{
printf("\nFile is empty");
return 0;
}
numPlayers = countLinesInFile(filePtr);
allocateMemory(&goals,&assists,&playerNames,numPlayers);
readLinesFromFile(filePtr,goals,assists,playerNames,numPlayers);
}
void allocateMemory(int **goals, int **assists, char *** names, int size)
{
int i = 0;
*goals = malloc(MAX_NAME * sizeof(int));
*assists = malloc(MAX_NAME * sizeof(int));
*names = malloc(MAX_NAME * sizeof(char*));
for (i = 0; i < size; i++)
{
(names[i]) = malloc(MAX_NAME * sizeof(char*));
}
}
void readLinesFromFile(FILE *fptr, int *goals, int *assists, char **names, int numLines)
{
int i = 0, j = 0, x = 0;
char players[MAX_LINE];
char *tokenPtr;
fptr = fopen(INPUT,"r");
for(i = 0; i < numLines; i++)
{
fgets(players,MAX_LINE, fptr);
tokenPtr = strtok(players," ");
strcpy((*(names+i)), tokenPtr);
while (tokenPtr != NULL)
{
tokenPtr = strtok(NULL," ");
if (x = 0)
{
goals[i] = atoi(tokenPtr);
x = 1;
}
else
{
assists[i] = atoi(tokenPtr);
x = 0;
}
}
}
}