// marking system (Dec 2, 2011) cs2xx 陳大文 5D99
#include<stdio.h>
#include "console.c"
#define MAX 5
int score[?][?], studTL[?], subjTL[?], gradeTL[?];

void cal_totals(){
	int i,j,n;
	float avg;
/*
	for (i=0;i<?;i++) studTL[?]=0;
	for (i=0;i<?;i++) subjTL[?]=?;
	for (i=0;i<?;i++) gradeTL[?]=?;


	for (i=0;i<?;i++){
		for (j=0;j<?;j++){
			studTL...
			subjTL...
		}
	}

	for (i=0;i<?;i++){
		avg = ...
		if(avg>85) n=0;
		else ...
		gradeTL...
	}
*/
}

void displayScore(){
	int i,j;
	printf("ST\tChi\tEng\tMath\tTotal\tAvg\n");
	for (i=0;i<?;i++){
		for (j=0;j<?;j++)
	}
	printf("\n");
	system("pause");
}

void random_scores(){
	int i,j;
	srand(time(NULL));
	for (i=0;i<?;i++)
		for (j=0;j<?;j++)
			score...
}

void input_score(){
	int i,j;
	printf("\nQ: Enter scores(Chi,Eng,Math)\n");
/*
	for (i=0;i<?;i++){
		printf("\student:\t");
		for (j=0;j<?;j++)
			scanf...
	}
*/
}

void scoreFromFile(){
	FILE *fp;
	char s[100];
	int i,j;
/*
	fp = ..."scores.txt"...	// Chan TM  11 22 33
	while(...){
		fgets...			// name
		if(...) break;
		for
			fscanf...		// scores: 11 22 33
		fgets...			// \n
		...
	}
	fclose(fp);
*/
}

void freqTables(){
	printf("----------------------------------------------------\n");
	printf("|   Grade   |    Range     |       Frequency       |\n");
	printf("|-----------|--------------|-----------------------|\n");
	printf("|     A     |   86 - 100   |          %3i          |\n");
	printf("|     B     |   70 -  85   |          %3i          |\n");
	printf("|     C     |   50 -  69   |          %3i          |\n");
	printf("|     D     |   30 -  49   |          %3i          |\n");
	printf("|     E     |   00 -  29   |          %3i          |\n");
	printf("|--------------------------|-----------------------|\n");
	printf("|                 Total    |          %3d          |\n");
	printf("----------------------------------------------------\n\n");
}

void statistics(){
	int i,j;
	printf("Grade\tFrequency   \n");
	printf("A	***            \n");
	printf("B	*******        \n");
	printf("C	************** \n");
	printf("D	*****          \n");
	printf("E	*              \n\n");
	printf("\n");
}

void inputMenu(){
	char opt='Q';
	printf("\t<< Input Scores >>  \n");
	printf("\t(r) random scores   \n");
	printf("\t(k) from keyboard   \n");
	printf("\t(f) from file       \n");	// scores.txt
	printf("\t(q) quit/exit       \n");
	printf("\tQ: option  ");
	fflush(stdin);
/*
	opt = ...
	printf("\n\n");
	if(opt=='Q') ...

	switch(opt) {
	case
		random_scores();
	case
		input_score();
	case
		scoreFromFile();
	}
*/
	cal_totals();		// 計算總和
	displayScore();		// 顯示結果
}

main() {
	char opt='Q';
	do {
//		clrscr();
		printf("<< Marking System >> \n");
		printf("(1) input scores     \n");
		printf("\t(r) random scores   \n");
		printf("\t(k) from keyboard   \n");
		printf("\t(f) from file       \n");	// scores.txt
		printf("(2) score list       \n");
		printf("(3) frequency table  \n");
		printf("(4) statistics       \n");
		printf("(Q) quit             \n");
		printf("Q: option  ");
		fflush(stdin);
		opt = toupper(getche());
		printf("\n\n");
		if(opt=='Q') break;

		switch(opt) {
		case '1':
			inputMenu();	break;
		case '2':
			displayScore();	break;
		case '3':
			freqTables();	break;
		case '4':
			statistics();	break;
		}
	} while(1);
}

/*
Marking System: 分數處理系統
        1. Store the names of at least 5 students in the appropriate array.
        2. Accept scores (0-100) for each student on 3 subjects listed below.
           If any score entered by user is out of range,
           issue appropriate error message and let the user input again.
        3. Calculate and store the average score and grade for each student.
        4. Calculate and store the average score for each subject.
        5. Construct and display the frequency table for each grade.
        6. A menu-driven system with modular design is highly recommended.

-------------------------------------------------------------------------------
|  Main menu :                         Sub-menu:                              |
|        ------- Marking System ------                                        |
|        |   <1>   Input  Scores     | a) random scores                       |
|        |         Calculate         | b) from keyboard                       |
|        |   <2>   Score List        | c) from scores.txt                     |
|        |   <3>   Frequency table   |                                        |
|        |   <4>   Statistics        |                                        |
|        |   <Q>   Quit              |                                        |
|        -----------------------------                                        |
|        Which choice <1-3,Q> ?  1                                            |
|                                                                             |
|  Input screen : Input scores (0-100)                                        |
|  --------------------------------------------------------                   |
|  |     Name            | Chinese  | English  |  Maths   |                   |
|  |---------------------|----------|----------|----------|                   |
|  |  1  Tai-man Chan    |    75    |    76    |    77    |                   |
|  |  2  Ivan Hung       |    70    |    65    |    50    |                   |
|  |  :  :               |    :     |          |          |                   |
|  |  5  Eva Cheung      |    85    |    67    |    100   |                   |
|  --------------------------------------------------------                   |
|                                                                             |
|  Output screen 1 : Score List                                               |
|  -----------------------------------------------------------------------    |
|  |     Name            |   Chinese | English |  Maths  | Average/Grade |    |
|  |---------------------|-----------|---------|---------|---------------|    |
|  |  1  Tai-man Chan    |    75     |   80    |    70   |  75.7    (B)  |    |
|  |  2  Ivan Hung       |    70     |   65    |    50   |  62.1    (C)  |    |
|  |  :  :               |    :      |         |         |               |    |
|  |  5  Eva Cheung      |    85     |   67    |   100   |  81.6    (B)  |    |
|  |---------------------|-----------|---------|---------|---------------|    |
|  |     Average score   |  75.0     | 58.5    |  60.3   |  64.6    (C)  |    |
|  -----------------------------------------------------------------------    |
|                                                                             |
|  Output screen 2 : Frequency table of overall result                        |
|  ----------------------------------------------------                       |
|  |   Grade   |    Range     |       Frequency       |                       |
|  |-----------|--------------|-----------------------|                       |
|  |     A     |   86 - 100   |           0           |                       |
|  |     B     |   70 -  85   |           1           |                       |
|  |     C     |   50 -  69   |           3           |                       |
|  |     D     |   30 -  49   |           1           |                       |
|  |     E     |   00 -  29   |           0           |                       |
|  |--------------------------|-----------------------|                       |
|  |                 Total    |           5           |                       |
|  ----------------------------------------------------                       |
-------------------------------------------------------------------------------

----------------------------------------------------------------------------------
|  List of variables used :                                                      |
|  ----------------------------------------------------------------------------- |
|  |  Name   |  Chinese    |  English    |   Maths     |  Average / Grade      | |
|  |---------|-------------|-------------|-------------|-----------------------| |
|  | name[0] | score[0][0] | score[0][1] | score[0][2] |  studAvg[0]  grade[0] | |
|  | name[1] | score[1][0] | score[1][1] | score[1][2] |  studAvg[1]  grade[1] | |
|  | :       |             |             |             |                       | |
|  | name[4] | score[4][0] | score[4][1] | score[4][2] |  studAvg[4]  grade[4] | |
|  |---------|-------------|-------------|-------------|-----------------------| |
|  | Average | SubjAvg[0]  | SubjAvg[1]  | SubjAvg[2]  |  SubjAvg[3]           | |
|  ----------------------------------------------------------------------------- |
|                                                       |
|  ---------------------------------------------------- |
|  |   Grade   |    Range     |       Frequency       | |
|  |-----------|--------------|-----------------------| |
|  |     A     |   86 - 100   |       gradeTL[0]      | |
|  |     B     |   70 -  85   |       gradeTL[1]      | |
|  |     C     |   50 -  69   |       gradeTL[2]      | |
|  |     D     |   30 -  49   |       gradeTL[3]      | |
|  |     E     |   00 -  29   |       gradeTL[4]      | |
|  |-----------|--------------|-----------------------| |
|  |           |     Total    |       total           | |
|  ---------------------------------------------------- |
---------------------------------------------------------

-------------------------------------------------------------------------------
|  Output screen 3 : Histogram (optional)                                     |
|  -----------------------------------------------------------------------    |
|  | Grade   Frequency                                                   |    |
|  |   A     ***                                                         |    |
|  |   B     *******                                                     |    |
|  |   C     ***************                                             |    |
|  |   D     *****                                                       |    |
|  |   E     *                                                           |    |
|  -----------------------------------------------------------------------    |
|                                                                             |
|  Output screen 4 : Histogram (optional)                                     |
|  -----------------------------------------------------------------------    |
|  | Frequency                                                           |    |
|  |                                                                     |    |
|  |     15 -             *                                              |    |
|  |        |             *                                              |    |
|  |        |             *                                              |    |
|  |        |             *                                              |    |
|  |        |             *                                              |    |
|  |     10 -             *                                              |    |
|  |        |             *                                              |    |
|  |        |             *                                              |    |
|  |        |        *    *                                              |    |
|  |        |        *    *                                              |    |
|  |      5 -        *    *    *                                         |    |
|  |        |        *    *    *                                         |    |
|  |        |   *    *    *    *                                         |    |
|  |        |   *    *    *    *                                         |    |
|  |        |   *    *    *    *    *                                    |    |
|  |      --|----------------------------------                          |    |
|  |        |   A    B    C    D    E  (Grade)                           |    |
|  -----------------------------------------------------------------------    |
-------------------------------------------------------------------------------

scores.txt
Tai-man Chan           95   88   90
Ivan Hung              87   91   76
Alex Tsui              77   98   91
James Wong             56   58   63
Eva Cheung             88   77   55
123456789-123456789-123456789-123456789-
*/