markprogram

/***********************************************************************
 * moduleMarks.c
 * Program to handle assessment marks.
 * Gerda Simkute
 * November 2017
***********************************************************************/

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

#define MAX_NAME_LENGTH 20

void printMenu();

void emptybuffer();

void displayTitle();

int numberStudents();

void promptNames(char pString[][MAX_NAME_LENGTH], int num);

void
promptMarksFor1(char names[][20], int marks[][3], int numOfstudents);

void
promptMarksFor2(char names[][20], int marks[][3], int numOfstudents);

void
promptMarksFor3(char names[][20], int marks[][3], int numOfstudents);

int findByName(char names[][20], int marks[][3], int length);


int main() {
    displayTitle();
    int numberOfStudents = numberStudents();
    char names[numberOfStudents][MAX_NAME_LENGTH];
    promptNames(names, numberOfStudents);
    int marks[numberOfStudents][3];
//    promptMarksFor1(names, marks, numberOfStudents);
//    promptMarksFor2(names, marks, numberOfStudents);
//    promptMarksFor3(names, marks, numberOfStudents);
    while(startMenu(names, marks, numberOfStudents)){;}
    findByName(names, marks, numberOfStudents);
}


/* display title function */
void displayTitle() {
    printf
            ("===================================================="
                     "=====\n");
    printf("              ASSESSMENT MARKS PROGRAM\n");
    printf
            ("===================================================="
                     "=====\n");
}

/* number of students function */
int numberStudents() {
    int numStudents;
    puts("Please enter the number of students taking the module: (Max"
                 " 75)");
    while (scanf("%d", &numStudents) != 1 || numStudents < 1 ||
           numStudents > 75)
    {
        puts(" ERROR! the number must be in the range of 1 and 75. "
                     "Please re-enter the value");
        emptybuffer();
    }
    printf("You have chosen %d students\n\n", numStudents);
    getchar();
    return numStudents;
}

/* student names function */
void promptNames(char names[][MAX_NAME_LENGTH], int num) {
    int i;
    printf("Please enter the names of %d students:\n", num);

    for (i = 0; i < num; i++) {
        printf("Student Name:\n");
        scanf("%[^\n]", names[i]);
        emptybuffer();
    }
}

/* display the menu list */
 void printMenu() {
    printf
            ("==================================================="
                     "======\n");
    printf("                       MAIN MENU\n");
    printf
            ("==================================================="
                     "======\n");

    printf("1. Enter marks for coursework 1\n");
    printf("2. Enter marks for coursework 2\n");
    printf("3. Enter marks for coursework 3\n");
    printf("4. Display a particular students mark\n");
    printf("5. Supervisor mode\n");
    printf("6. Exit program\n\n");
    printf("---------------------------------------------------\n");
}

/* select from menu */
int startMenu (char names [][MAX_NAME_LENGTH], int marks [][3], int
number)
{
    int entry;
    printMenu();
    puts("Please enter option number:");
    while (scanf("%d", &entry) != 1)
    {
        puts("Error, please enter 1-6");
        emptybuffer();
    }
    emptybuffer();

    switch(entry)
    {
        case 1 : promptMarksFor1(names, marks, number);
            break;

        case 2 : promptMarksFor2(names, marks, number);
            break;

        case 3 : promptMarksFor3(names, marks, number);
            break;

        case 4:
            findByName(names, marks, number);
            break;


        case 6:
            return 0;

        default:
            puts("Incorrect number. Enter 1-6");


    }
    return 1;
}


/* enter the marks for coursework 1 */
void
promptMarksFor1(char names[][20], int marks[][3], int numOfstudents) {
    char charChoice;
    do {
        int i;
        puts("-------------------------------");
        puts("Enter marks for coursework 1:\n");
        for (i = 0; i < numOfstudents; i++) {
            char *currentName = names[i];
            printf("Enter marks for %s:\n", currentName);

            while (scanf("%d", &marks[i][0]) != 1) {
                puts("Try again. Enter a number");
                emptybuffer();
            }
            emptybuffer();
        }


        puts("Are you okay with these marks? Please enter Y or N:");
        scanf("%c", &charChoice);
        emptybuffer();
    } while (charChoice != 'y' && charChoice != 'Y');
}


/* Enter marks for coursework 2 */
void
promptMarksFor2(char names[][20], int marks[][3], int numOfstudents) {
    char charChoice;
    do {
        int i;
        puts("-------------------------------");
        puts("Enter marks for coursework 2:\n");
        for (i = 0; i < numOfstudents; i++) {
            char *currentName = names[i];
            printf("Enter marks for %s:\n", currentName);

            while (scanf("%d", &marks[i][1]) != 1) {
                puts("Try again. Enter a number");
                emptybuffer();
            }
            emptybuffer();
        }


        puts("Are you okay with these marks? Please enter Y or N:");
        scanf("%c", &charChoice);
        emptybuffer();
    } while (charChoice != 'y' && charChoice != 'Y');
}

/* Enter marks for coursework 3 */
void
promptMarksFor3(char names[][20], int marks[][3], int numOfstudents) {
    char charChoice;
    do {
        int i;
        puts("-------------------------------");
        puts("Enter marks for coursework 3:\n");
        for (i = 0; i < numOfstudents; i++) {
            char *currentName = names[i];
            printf("Enter marks for %s:\n", currentName);

            while (scanf("%d", &marks[i][2]) != 1) {
                puts("Try again. Enter a number");
                emptybuffer();
            }
            emptybuffer();
        }


        puts("Are you okay with these marks? Please enter Y or N:");
        scanf("%c", &charChoice);
        emptybuffer();
    } while (charChoice != 'y' && charChoice != 'Y');
}

/* selecting a student and displaying their mark */
int findByName(char names[][20], int marks [][3], int studentNum)

{
    int t;
    for(t=0;t<studentNum;t++)printf("We have a name: %s \n\n",names[t]);

    char selectedStudent[20];
    int i;
    puts("Enter the name of the student whose mark you wish to see:");
    scanf("%[^\n]", selectedStudent);
    emptybuffer();

    for( i = 0; i < studentNum; i ++)
    {
        int matching = !strcmp(selectedStudent, names[i]);
        if (matching) break;
    }
    printf("Index is %d\n",i);
    if(i==studentNum)
    {
        printf("Error, no name found! \n");
    }

    printf("Here are the marks from %s's coursework:\n", names[i]);
    printf("%d \n", marks[i][0]);
    printf("%d \n", marks[i][1]);
    printf("%d \n\n", marks[i][2]);

    return 0;

}





/* empty buffer function */
void emptybuffer() {
    while (getchar() != '\n') { ;
    }
}