I am now moving in a different direction with this, Ive created a menu, and finished the text file but have come up with an error and a few warnings saying:
error C2065: 'hfPtr' : undeclared identifier
warning C4047 '=' : 'int ' differs in levels of indirection from 'struct _iobuf *'
warning C4047: '==' : 'int ' differs in levels of indirection from 'void *'
warning C4133: 'function' : incompatible types - from 'char [29]' to 'struct _iobuf *'
warning C4133: 'function' : incompatible types - from 'char [22]' to 'struct _iobuf *'
does anyone see what I've done wrong and anycoments on this code would be appreciated, thanks
Code:#include <stdio.h> /* hardwareData structure definition */ struct hardwareData { int recordNum; char toolname[20]; int quantity; double cost; }; /* end structure hardwareData */ /* prototypes */ int enterChoice( void ); void textFile( FILE *readPtr ); void updateRecord( FILE *fPtr ); void newRecord( FILE *fPtr ); void deleteRecord( FILE *fPtr ); int main() { FILE *hfPtr; /* hardware.dat file pointer */ int choice; /* user choice */ /* fopen opens file; exits if file cannot be opened */ if ((hfPtr = fopen( "hardware.dat", "rb+" )) == NULL ) { printf( "File could not be opened.\n" ); } /* end if */ else { /* enable user to specify action */ while (( choice = enterChoice()) != 5 ) { switch ( choice ) { /* create text file from record */ case 1: textFile( hfPtr ); break; /* update record */ case 2: updateRecord( hfPtr ); break; /* create record */ case 3: newRecord ( hfPtr ); break; /* delete existing record */ case 4: deleteRecord ( hfPtr ); break; /* display message if user does not enter valid choice */ default: printf( "Incorrect choice\n" ); break; } /* end switch */ } /* end while */ fclose( hfPtr ); /* fclose closes the file */ } /* end else */ return 0; /* indicate successful termination */ } /* end main */ /* create formated text for printing */ void textFile( FILE *readPtr ) { FILE *writePtr; /* hardware.txt file pointer */ /* create hardwareData with default information */ struct hardwareData hardware = { 0, "", 0,0.0 }; /* fopen opens file; exits if file cannot be opened */ if ((hfPtr = fopen( "hardware.dat", "rb+" )) == NULL ) { printf( "File could not be opened.\n" ); } /* end if */ else{ rewind( readPtr ); /* sets pointer to begining of file */ fprintf( "writePtr, %-6s%-10s%-8s%-8s\n", "Record#", "Tool name", "Quantity", "Cost" ); /* copy all records from random-access file to text file */ while ( !feof( readPtr ) ) { fread( &hardware, sizeof( struct hardwareData ),1, readPtr ); /* write single record to text file */ if ( hardware.recordNum != 0 ) { fprintf( "%-6d%-16s%-11d%10.2f\n", hardware.toolname, hardware.quantity, hardware.cost ); } /* end if */ } /* end while */ fclose( writePtr ); /* fclose closes file */ } /* end else */ } /* end function textrFile */
