Programming

#include <stdio.h>
#include <stdlib.h>

struct student
{
int roll_num;
char name[120];        //Line 10
//char *name;         //Line 11
struct student *next;
};

int main ()
{
FILE *fptr;
// FILE *ofptr;         //Line 15

struct student *temp;

fptr = fopen("INFILE.txt","r");
temp = malloc(sizeof(struct student));
// temp->name = malloc(sizeof(char)*120);            //Line 23
while(fread(temp, sizeof(struct student), 1, fptr))
    printf("%d\t%s\n",temp->roll_num, temp->name);
free(temp);
fclose(fptr);

/***************************************************** For writing          //Line 30

ofptr = fopen("OUTFILE.tab","w");
temp = malloc(sizeof(struct student));

while(temp != NULL)
{
    fwrite(temp, sizeof(struct student), 1, ofptr);
    temp = temp->next;
}
fclose(ofptr);
free(temp);
*****************************************************/                 //Line 40
 return 0;
}
/* INFILE.txt:
10001 Angola
10002 Bangalore
10003 Cairo
10004 Dallas
10005 Edmonton
10006 Fargo
10007 Georgia
10008 Halifax
10009 Indianapolis
10010 Jamaica

OUTFILE.tab:
808464433    1 Angola
10002 Bangalore
10003 Cairo
10004 Dallas
10005 Edmonton
10006 Fargo
10007 Georgia
10008 Halifax
10009 Indianapolis
?x.?0010 Ja1

*/