How can i access variables in structs in C to print? - c

Question

**> Is there a way to access a variable that come from other struct? When
i try this code,i am getting this compile error.
**
test.c: In function ‘readRecordsFromFile’:
test.c:70:18: error: expected expression before ‘kdnode’
printf(" %f\n",kdnode.data.latitude);
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include <math.h>
#define rec_size 112
typedef struct _Node kdnode;
typedef struct _Record record;
static void readRecordsFromFile(char *filename);
struct _Record{
int plateNumber;
long *name[32];
double area;
int population;
int density;
int popcitycenter;
long region;
double latitude;
double longtitude;
};
struct _Node
{
//kdnode left;
//kdnode right;
record data;
bool type;
double x;
double y;
int pagenumber;
};
int main(){
readRecordsFromFile("data.dat");
return 0;
}
static void readRecordsFromFile(char *filename)
{
FILE* inputFile;
inputFile = fopen(filename, "rb");
int i;
if(!inputFile) {
printf("Could not open file");
return;
}
int length,record_count;
fseek(inputFile,0,SEEK_END);
length=ftell(inputFile);
fseek(inputFile,0,SEEK_SET);
record_count = length/sizeof(record);
kdnode kd;
fread(&kd,rec_size,2,inputFile);
printf("%d",ftell(inputFile));
for (i = 0; i < record_count; i++)
{
printf(" %f\n",kdnode.data.latitude);
}
fclose(inputFile);
}

Answer 1

typedef struct _Node is typedefed as knode. knode represents a data type and it's not an identifier, so this
printf(" %f\n",kdnode.data.latitude);
has to be
printf(" %f\n", kd.data.latitude);
You should also check return values for functions like fread() for example.