Writing a struct to a binary file problem

I have searched the messageboard for a while but didn't find anything similar.
I have written the following c prog:

Code:

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#include <stdio.h>

#define RECSIZE 8+21+13+21+2*sizeof(int)+sizeof(char)

typedef struct {
    char id[8];
    char surname[21];
    char name[13];
    char street[21];
    int number;
    int postcode;
    char condition;
} pelatis;

int main() {

        FILE *fp1=fopen("dataset1.in","r");
        pelatis p,p1;
        fscanf(fp1,"%s %s %s %s %d %d %c",p.id,p.surname,p.name,p.street,&p.number,&p.postcode,&p.condition);
       
        FILE *fp2=fopen("testfile","wb+");
        fwrite(&p,RECSIZE,1,fp2);fseek(fp2,0,SEEK_SET);
        fread(&p1,RECSIZE,1,fp2);
        printf("%s %s %s %s %d %d %c\n",p1.id,p1.surname,p1.name,p1.street,p1.number,p1.postcode,p1.condition);
        fclose(fp1);
        fclose(fp2);
}

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The dataset1.in is a text file with records such as:

A250000 OF PMJXVTEWS HACJDEZ 36 50111 0
A249999 JN PPERLJB UUNHWSYY 43 58540 0
A249998 WFUVZZ KGHVAJC BAXHHPRVS 62 53643 1
A249997 LYTCPKTPO DFLUN TIERMBSNDYDX 91 72358 0
A249996 ZRD VPEEVMENT HORTSM 111 21071 1

What I do is to read the first record,write it in the binary file testfile, and then read it and print it to validate the content I previously wrote.

All the fileds are printed as they should except for the condition field which is a single character.What is printed is:

Code:

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A250000 OF PMJXVTEWS HACJDEZ 36 50111

---

If I change it to int and change the %c to %d,the condition field is printed correctly.

What am I doing wrong?

Thanks in advance.

> What am I doing wrong?
You're assuming that the size of a structure is the same as the sum of the sizes of the members

RECSIZE != sizeof(pelatis)
in most environments

So just use the sizeof the struct, and forget your #define