Need help on Linked Error

[karipap]

I’ve been working on this program and can’t solve the errors.
The correct output should be –

Enter Subject Code : BKG 121313
Enter Subject Name : C Programming Class
Enter Total No of Student : 1

------------------------------------
STUDENT 1
------------------------------------
Quiz 1 <5m> : 3.5
Quiz 2 <5m> : 4.2
Quiz 3 <5m> : 1.6
Assignment 1 <15m> : 12.4
Assignment 2 <15m> : 13.2
Midterm Test <20m> : 18.3
Final Exam <50m> : 46.5
------------------------------------
STUDENT 1 DETAILS
------------------------------------
Quiz Mark : 6.20 [Details: Quiz 1 : 3.5 , Quiz 2 = 4.2 , Quiz 3 : 1.6]
Assignment marks [20m] : 17.07[Details: Assignment 1 : 12.4, Assignment 2 : 13.2 ]
Midterm test marks [20m]: 18.30
Final Exam marks [50m] : 46.50
Total Marks : 88.07
Grade : A



This is my code -

#include<stdio.h>
#include<string.h>
float calculate_quiz();
float calculate_assignment();
void dipslay(float quizm[], float assignment[], float midterm, float final, char grade, int j);

void main()
{
     char code[10], name[15];
     int number, i, A, B, C , F;
     float midterm, final, quizm, assignment, total_mark;
     char grade;
     
     //declaration
     
     printf("\nEnter Subject Code: ");
     gets(code);
     printf("\nEnter Subject Name: ");
     gets(name);
     printf("\nEnter Total No Of Student: ");
     scanf("%d", &number);
     
     for (i=1; i<=number; i++)
     {
         quizm=calculate_quiz();
         assignment=calculate_assignment();
         
         printf("\nEnter Midterm Test Mark: ");
         scanf("%f", &midterm);
         printf("\nEnter Final Exam Mark: ");
         scanf("%f", &final);
         
         total_mark=quizm+assignment+midterm+final;
         
         //nested if
         if(total_mark>=75)
         {
              grade='A';
              A++;
         }
         
         else if(total_mark >= 60 && total_mark <=75)
         {
              grade='B';
              B++;
         }
         
         else if(total_mark >= 60 && total_mark <=60)
         {
              grade='C';
              C++;
         }
         
         else
         {
             grade='F';
             F++;
         }
         //end of nested if
         
         display(quizm,assignment,midterm,final,grade,i);
         
     }
     //end of main
     
     float calculate_quiz()
     {
           float total=0, quiz[0];
           int m ;
                      
           for (m=0; m<3; m++)
           {
            printf("\nQuiz %d <5M>: ", (m+1));
            scanf("%f", &quiz[m]);
            total = total + quiz[m];
           }       
            
            return ((total/15)*10);
     }
     //end calculate quiz
     
     float calculate_assignment()
     {
           float total_mark=0,assignment[0];
           int x;
           
           for (x=0 ; x<2 ; x++)
           {
              printf("\nQuiz %d <15M>: ", (x+1));
              scanf("%f", &assignment[x]);
              total_mark= total_mark + assignment[x];   
           }
           return ((total_mark/30)*20);
     }

     //end calculate assignment
     
     void dipslay(float quizm[], float assignment[], float midterm, float final, char grade, int i)
     {
         int j;
                  
         printf ("\n----------------------------");
         printf ("\n student %d details ", (i+1));           
         printf ("\nQuiz Mark [10M]: %2.f ", quizm);
         
         for (i=0 ; i<3 ; i++)
         {
             printf ("\nQuiz %d = %.2f ", quizm[j]);
             printf ("\nQuiz %d = %.2f ", j , quizm[j]);
         }
      
         for (j=0 ; j<2 ; j++)
         {
                 printf ("\nAssignment %d = %.2f ", assignment[j]);
                 printf ("\nAssignment %d = %.2f ", j , assignment[j]); 
         }    


getch();

}
}

There are errors appear on:

In fuction ‘main’
• [Linker error] undefined reference to `calculate_quiz'
• [Linker error] undefined reference to `calculate_assignment'
• [Linker error] undefined reference to `display'
Id returned 1 exit status



Looking forward for your response
Thx!

[quzah]

Take all of those function assignments out of your main function. Also, you might want to make them before your main function, or at least prototype them up top, so that when you want to call them, it actually knows what they are.

You can't make functions inside of other functions. They must be their own block:

void foo( void )
{
    ...do stuff...
}

int main( void )
{
    ...do stuff...
}

Not:

int main( void ){
    void foo( void )
    {
        ...do stuff...
    }

}

See?

Quzah.