/*
 *  lab10q1.c
 *  
 *
 *  Created by Cristian Hancila on 15/04/07.
 *  Copyright 2007 __MyCompanyName__. All rights reserved.
 *
 */

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

typedef struct {
	char last_name[25];
	int std_no;
	char major[15];
	int numCourses;
	char course_nums[8][7];
	int course_marks[8];
} student;

float studentAvarage(student s);

int input_students(student ** s){
	int count=0;
	int n=0;
	FILE * fp;
	s=malloc(sizeof(student *) * 25);
	
	fp=fopen("lab10.students.data.txt","r");
	
	while(!feof(fp)) { 
		s[n]=malloc(sizeof(student));
		char c[15];
		fscanf(fp,"%s",s[n]->last_name);
		//fscanf(fp,"%s",c);
		printf("%s\n",s[n]->last_name);
		fscanf(fp,"%d",&(s[n]->std_no));
		fscanf(fp,"%s",s[n]->major);
		fscanf(fp,"%d",&(s[n]->numCourses));
		int z = 0;
		for(z=0;z<s[n]->numCourses;z++){
			fscanf(fp,"%s %d",s[n]->course_nums[z],&s[n]->course_marks[z]);
		}
		n++;
		count++;
	}
	printf("end of func call %s\n",s[0]->last_name);
	output_students(s,count);
	fclose(fp);
	return count;
}

void output_students(student ** s,int count){
	int n=0;
	printf("\n Format:\n Last Name | Student Number | Major\n Course - Mark\n");	
	for(n=0;n<count-1;n++){
		printf("%-15s %d      %s\n\n",s[n]->last_name,s[n]->std_no,s[n]->major);	
		int z;
		for(z=0;z<s[n]->numCourses;z++){
			printf("                %s   %d\n",s[n]->course_nums[z],s[n]->course_marks[z]);
		}
		printf("\n");
	}
}

void majorAvarage(student s[], int count){
	FILE * fp;
	char major[15];
	int n = 0;
	int c=0;
	float msum=0;
	fp = fopen("lab10.majors.data.txt","r");
	do{
		fscanf(fp,"%s",major);
		msum=0;
		c=0;
		for(n=0;n<count-1;n++){
			//printf("%s %s\n",major,s[n].major);
			if(strncmp(major,s[n].major,15)==0){
				msum+=studentAvarage(s[n]);
				c++;
			}
		}
		if (c==0) c=1;
		msum=msum/c;
		printf("For major %s, avarage of %d students is %2.1f\n",major,c,msum);
	}while (!feof(fp));
	
	fclose(fp);
} 

float studentAvarage(student s){
	int n =0;
	float sum=0;
	for (n=0;n<s.numCourses;n++){
		sum+=(float)s.course_marks[n];
	}
	float ret = sum/s.numCourses;
	printf("    %s's Avarage: %5.1f\n",s.last_name,ret);
	return ret;
}
int main(){
	int count;
	student ** list;
	count=input_students(list);
	printf("%s\n",list[0]->last_name);
	//output_students(list,count);
	//majorAvarage(list,count);
	return 1;
}