Thread: help with this

i have an assignment that has to show and sort a student record system from a txt file, i have done this, but it needs to be more efficent an also i need the sort to work properly and be in more depth e.g. alphabetically or some other form

here it is

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
 
void goto_first();
void goto_prev();
void goto_next();
void goto_last();
void goto_sort();
void menu();
 
struct stype
    { 
        char s1[100]; 
        char s2[100]; 
        char s3[100]; 
        char s4[100]; 
    };

struct stype studs[10];

int compare(const void* p1, const void* p2)
{
    const struct stype* s1 = (const struct stype*)p1;
    const struct stype* s2 = (const struct stype*)p2;
    return strcmp(s1->s3, s2->s3);
}

    FILE *f;

    char *t;
    char seps[] = ",";
    char line[80];
    char page[100][100]; 
   
    int len;
    int CurrentLine = 0;
    int LastLine = 0;
    int k;
    int size;
  
    void breakup(int c) 
    {
     // fill up studs[c]
    
    }
 
void main() 
    {
    
    FILE *f = fopen("studentl.txt", "r");
     
    if (f != NULL) 
        { 
            printf("\n\t\t\t***Student Record System***\n");
            printf("\nFILE STATUS:  File Opened OK\n\n");
        }
     else 
        { 
            printf("\n\t\t\t***STUDENT DATABASE***\n");
            printf("\nFILE STATUS:  ERROR - File not loaded\n");
            printf("\nMake sure the file exe and the student record system are saved together in the same place.\n\n");
            exit(0);
        }
 
     while(!feof(f)) 
        {
        for (k=0; k<1; k++)
        {
        fgets(line, 80, f);
        }
         if (feof(f))
        {
            break;
        }
        len = strlen(line);
        
        if (len > 0) 
        { 
            line[len-1] =0; 
        }
            
        strcpy(page[LastLine++], line);
        
    }
        menu();
 
    }
 
void menu()
{
    
    char input;
    char finish = 0;
            
    do 
    {
        printf("Press, N for Next, P for Previous, F for First, or L for Last record.\nPress S, 

to Sort records, by Student #.  X to Exit:\n\n");
        input = getch();
             
        switch(input)    
        {
          
        case 'f':
        case 'F':
            goto_first();
            break;
        
        case 'l':
        case 'L':
            goto_last();
            break;
          
        case 'n':
        case 'N':
            goto_next();
            break;

        case 'p':
        case 'P':
            goto_prev();
            break;

        case 's':
        case 'S':
            goto_sort();
            break;

        case 'x':
        case 'X':
            finish = 1;
            break;
          
        default:
            printf("\n\n<WRONG CHAR>\n");
        }
    } while (finish!=1);
}    
     
void goto_first()
{
     CurrentLine = 0;
          
     f = fopen("Students.txt", "r");
     if (f !=NULL)
     

     for (k=0;k<1;k++)
     {
         fgets(line,80,f);
     }
     
     t=strtok(line,seps); strcpy (studs->s1, t);
     t=strtok(NULL,seps); strcpy (studs->s2, t);
     t=strtok(NULL,seps); strcpy (studs->s3, t);
     t=strtok(NULL,seps); strcpy (studs->s4, t);

     printf("\n\t   ***FIRST RECORD***   ");
     printf("\n\nRECORD # %d", k);
     printf("\n\n\tSURNAME: \t%s \n\n\tFIRSTNAME: \t%s \n\n\tSTUDENT #: \t%s\n\n\tD.O.B: \t\t%s\n", 

studs->s1, studs->s2, studs->s3, studs->s4);
     printf("\n\n");;

     printf( "\t***BEGINNING OF RECORDS***\n\n");

     CurrentLine = 1;
}

void goto_last()
{
     CurrentLine = 9;
     
     f = fopen("student.txt", "r");
     if (f !=NULL)
     
     for (k=0;k<10;k++)
     {
         fgets(line,80,f);
     }
     
     t=strtok(line,seps); strcpy (studs->s1, t);
     t=strtok(NULL,seps); strcpy (studs->s2, t);
     t=strtok(NULL,seps); strcpy (studs->s3, t);
     t=strtok(NULL,seps); strcpy (studs->s4, t);

     printf("\n\t   ***LAST RECORD***   ");
     printf("\n\nRECORD # %d", k);
     printf("\n\n\tSURNAME: \t%s \n\n\tFIRSTNAME: \t%s \n\n\tSTUDENT #: \t%s\n\n\tD.O.B: \t\t%s\n", 

studs->s1, studs->s2, studs->s3, studs->s4);
     printf("\n\n");;

     printf( "\t  ***END OF RECORDS***  \n\n");
}
 
void goto_next()
{
     
    while (CurrentLine != 10)
    {
     CurrentLine = CurrentLine + 1;

     f = fopen("Students.txt", "r");
     if (f !=NULL)
     
     for (k=0;k<CurrentLine;k++)
     {
         fgets(line,80,f);
     }
     
     t=strtok(line,seps); strcpy (studs->s1, t);
     t=strtok(NULL,seps); strcpy (studs->s2, t);
     t=strtok(NULL,seps); strcpy (studs->s3, t);
     t=strtok(NULL,seps); strcpy (studs->s4, t);

     printf("\n\t   ***NEXT RECORD***   ");
     printf("\n\nRECORD # %d", k);
     printf("\n\n\tSURNAME: \t%s \n\n\tFIRSTNAME: \t%s \n\n\tSTUDENT #: \t%s\n\n\tD.O.B: \t\t%s\n", 

studs->s1, studs->s2, studs->s3, studs->s4);
     printf("\n\n");;     
     
     if (CurrentLine >= 10) { printf( "\t  ***END OF RECORDS***  \n\n");}

     return;
     
    }

}
 
void goto_prev()
{
     while (CurrentLine != 1)
    {
     
     CurrentLine = CurrentLine - 1;

     f = fopen("Students.txt", "r");
     if (f !=NULL)
     
     for (k=0;k<CurrentLine;k++)
     {
         fgets(line,80,f);
     }

     t=strtok(line,seps); strcpy (studs->s1, t);
     t=strtok(NULL,seps); strcpy (studs->s2, t);
     t=strtok(NULL,seps); strcpy (studs->s3, t);
     t=strtok(NULL,seps); strcpy (studs->s4, t);

     printf("\n\t   ***PREVIOUS RECORD***   ");
     printf("\n\nRECORD # %d", k);
     printf("\n\n\tSURNAME: \t%s \n\n\tFIRSTNAME: \t%s \n\n\tSTUDENT #: \t%s\n\n\tD.O.B: \t\t%s\n", 

studs->s1, studs->s2, studs->s3, studs->s4);
     printf("\n\n");;     

     if (CurrentLine <= 1) { printf("\t ***BEGINNING OF RECORDS***\n\n");}
     
     return; 
    }

}

void goto_sort()
{
     int CurrentLine = 0;
     
     FILE* f = fopen("Students.txt", "r");
     if(f == NULL)
     {
         printf("Can't open file\n");
         return;
     }

    while(fgets(line,sizeof(line),f) != NULL)
    {
        size = strlen(line);
        if(line[size-1] == '\n')
            line[size-1] = 0;
        t=strtok(line,seps); strcpy (studs[CurrentLine].s1, t);
        t=strtok(NULL,seps); strcpy (studs[CurrentLine].s2, t);
        t=strtok(NULL,seps); strcpy (studs[CurrentLine].s3, t);
        t=strtok(NULL,seps); strcpy (studs[CurrentLine].s4, t);
        CurrentLine++;
        if(CurrentLine == 10)
            break;
    }
    
    printf("BEFORE SORTING: \n\n");
    printf("\t RECORD | STUDENT # | D.O.B\t | SURNAME\t | FIRSTNAME\n");
    for (k=0;k< CurrentLine;k++) 
    { 
        printf("\n\t%4d\t| %s  | %s\t | %s\t | %s ", k, 
        studs[k].s3, 
        studs[k].s4, 
        studs[k].s1, 
        studs[k].s2); }

    qsort((void *) studs, CurrentLine, sizeof( struct stype), compare);

    printf("\n\nAFTER SORTING: \n\n");
    printf("\t RECORD | STUDENT # | D.O.B\t | SURNAME\t | FIRSTNAME\n");
    for (k=0;k< CurrentLine;k++) 
    { 
        printf("\n\t%4d\t| %s  | %s\t | %s\t | %s ", k, 
        studs[k].s3, 
        studs[k].s4, 
        studs[k].s1, 
        studs[k].s2); 
    }
     
     if (CurrentLine >= 10) 
     { 
         printf("\n\n\t\t\t   ***END OF RECORDS***   \n\n");
     }

}

any help is much appreciated thanks guys