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

/*
Written By : Ahmad Jawed ZAFAR
Date : 15/02/2008
Program Name : Calculates Exam Result
*/

int main()
{
	FILE *fptr;

	int i, j, st_no, les_no;
	char temp[25], slct;
time_t lt;
	lt = time(NULL);	
	printf(ctime(&lt));
	printf("\n");

	struct exam
	{
		char *name;
		int mark[15],  total;


	} student[50],t;

	fptr=fopen("data.txt","w"); /* writes into the data.txt file */
     printf("                  *** Programmed By ZAFARSOFT ***\n");
	printf("\n");

	printf("Enter Total Number Of Students, Maximum 50 : ");
	scanf("%d", &st_no);
	printf("\n");
	printf("Now Enter Total Number Of Lessons, Maximum 15 : ");
	scanf("%d", &les_no);
	printf("\n");

		gets(temp);
	
		for (i=0; i<st_no; i++)
		{
		printf("-----------------------------------------------------|\n");
		printf("Enter Student < %d > Name\n", i+1);
		gets(temp);

			student[i].name=(char*)malloc(strlen(temp)*sizeof(char));
			strcpy(student[i].name, temp);
			

			printf("Now Enter Student < %d > or < %s > Marks\n", i+1, student[i].name);

			student[i].total=0;
			for (j=0; j<les_no; j++)
			{
                printf("Subject  %d  Mark \n", j+1);
				scanf("%d", &student[i].mark[j]);
				student[i].total+=student[i].mark[j];
			}

				gets(temp);
		}

		printf("\n");
		printf("********************************************************\n");
		printf("\n");

    
		for (i=0; i<st_no-1;i++)
		{
				for (j=i+1; j<st_no; j++)
				{
					if (student[i].total<student[j].total){
								t=student[i];
                                student[i]=student[j];
                                student[j]=t;			
                                }		
				}
		
		
			}



	printf("\n");

for (i=0; i<st_no; i++)
{
	printf("------------------------------------------------------|\n");
	printf("< %dth > Total Mark Of <  %s  > Is < %d > \n", i+1, student[i].name, student[i].total);
    printf("------------------------------------------------------|\n");
}
printf("\n");
printf("Do You Want To Write The Result In A Text File (Y/N) \n");
	scanf("%c",&slct);
	if (slct == 'y' || slct == 'Y')
    {    
         for (i=0; i<st_no; i++)
         {             
         fprintf(fptr, " < %d > Total Mark Of <  %s  > Is < %d > \n", i+1, student[i].name, student[i].total); /* writes into the data.txt file */
         }
    }
       fclose(fptr);
system("pause");
return 0;
}