I m trying to open a file with fopen, but I don t want a static location so I am getting the string in from the user when he/she runs the program. However if a user does not enter one a default file is specified.
Can I just put the malloc var in to the fopen path parameter?
char *file_path_mem = malloc(sizeof(char));
if (file_path_mem != NULL) //Null if out of memory
{
printf("Enter path to file, if in current directory then specify name
");
printf("File(default: marks.txt): ");
while ((c = (char)getchar()) !=
)
{
file_path_mem[i++] = c;
file_path_mem = realloc(file_path_mem, i+1 * sizeof(char));
}
file_path_mem[i] = ;
if (i == 0 && c ==
)
{
file_path_mem = realloc(file_path_mem, 10 * sizeof(char);
file_path_mem = "marks.txt";
}
}
else
{
printf("Error: Your system is out of memory, please correct this");
return 0;
}
if (i==0)
{
FILE *marks_file = fopen("marks.txt", "r");
}
else
{
FILE *marks_file = fopen(file_path_mem, "r");
}
free(file_path_mem);
As you might have guess I am a c novice so if I have done something horrible wrong, then sorry.