Files, Structs, and Pointers
Hi, what I'm doing is reading in information from a binary file, and storing that information into an array of structs. Here is that bit of code. Record in this case is my base struct.
Once the entire binary file is read in, I no longer use the file until I am going to write to it. So in the run of the program I do all my messing around with the information within the structs after they are stored in this array.
int read_file( int filesize , int &count , Record *&ptr , fstream &file )
int i = 0;
file.seekg(0,ios::end); // move to end of file
filesize = file.tellg(); // get number of byte in file
count = filesize / sizeof(Record); // compute number of records
file.seekg(0,ios::beg); // move to beginning of file
ptr = new Record[count];
for( i = 0 ; i < count ; i++ )
file.read( (char *) &ptr[i] , sizeof(Record) );
This is probably a simple question, but how do I allocate more space for new structs in this array? During the run of the program, I will be adding and deleting records, and as my code stands I only have enough room for what I read in originally, correct?
After manipulating the info, it is all written back into the file.
Thanks for any help. ;)