structures & data types

[Cyber Kitten]

I have written a program which updates a master file using a transaction file and creates a new generation of the master file.
I ran the program and cannot get rid of 3 errors - can you give me any clues on how to solve these.

The basic set up of my program is:

typedef struct{
char cust_code [6];
float cust_bal;
long credit_limit;
}MASTER_R;

struct record{
char part_no[7]; /*Have to be char for previous prog*/
char quantity [5];
};

struct record2{
char balance [10];
char limit [8];
};

union account{
struct record old;
struct record2 create;
};

typedef struct{
char code [5];
char blah [6];
union account details;
}cust_rec_st;

cust_rec_st *cust_rec_ptr;
MASTER_R *master_rec_ptr;

Error 1
I want to put the 'balance' from the transaction struct record2 into 'cust_bal' in the master struct. The follwing gave me an error:

master_rec_ptr->cust_bal = cust_rec_ptr->details.create.balance;

Type casting (float) doesn't work. What is another way to do this without getting an error re: type incompatibility?

Error 2
I also want to put the 'limit' from the trans into 'credit_limit' in the master.

master_rec_ptr->credit_limit = cust_rec_ptr->details.create.limit;

This time error is non portable pointer conversion.

Error 3
The following are already set up in a header file. An indexed file so that using the part number you can find the record required.

typedef struct{
char key [7];
float price;
}RECORD_DATA;

typedef struct{
char key [7];
unsigned long rec_num;
}RECORD_INDEX;

A function to read the file is also included in the header file.
The prototype for the function is:
static RECORD_DATA *search_file(char *product_code);

The function is passed the product code and searches the file returning a pointer to the appropriate data structure.

I have therefore written:

float value = 0.0;

RECORD_DATA *stock_rec;

if((stock_rec = search_file(cust_rec_ptr->details.old.part_no)) != NULL)
{
/*the next line is where I get the error*/

value = (float)cust_rec_ptr->details.old.quantity * stock_rec->price;
}

I'm wanting to multiply the quantity from the transaction file with the stock price. Again the type incompatibility.

Any help much appreciated.
Kitten

[jasrajva]

struct record2{
char balance [10]; <------------------------Look here
char limit [8];
};

typedef struct{
char cust_code [6];
float cust_bal; <---------------------and here
long credit_limit;
}MASTER_R;

float and char* are incompatible types so youll need to use


master_rec_ptr->cust_bal = atof(cust_rec_ptr->details.create.balance);

double atof( const char *string );

converts string to a double so that should work for you

for the second use

itoa(string)
this converts string limit in record2 to integer (long)


couldnt figure out the third one but ill try

[jasrajva]

hadnt lookd at err3 bfore
it is obviously the same type incompatibility and the soln is also similar