use warnings;
use Inline C => <<'EOC';

#define DSZ 108

struct stud
{
        char name[100];
        int roll_no;
};

struct student
{
        struct stud s;
        int grade;
}value;

void foo(char * fn) {
     FILE *fps;
     int n;
     struct student *buffer=(struct student*)malloc(sizeof(struct student));
     fps=fopen(fn,"rb");
     n=fread(buffer,DSZ,1,fps);
     printf("Name:%s Grade:%d NO:%d\n",buffer->s.name,buffer->grade,buffer->s.roll_no);
     fclose(fps);
}

EOC

foo("Myfile");
# outputs:
# Name:myname Grade:1 NO:149