Question

Program in C

Student Data using Structs

In this assignment you will create a program (using multiple .c files) to solve the following problem:

You have been hired by the university to create a program that will read in input from a .txt file. This input will contain a student name, student id #, their age and their current gpa. You should use the following struct for your student data:

struct Student{

                char name[50];

                int id;

                float gpa;

                int age;

};

Your job is to create a program that after it reads in all the student records in the .txt file ( there could be up to 100), prints out the average gpa, the name of the student with the highest gpa, the number of students with a gpa higher than the average and the average age of the students. Your program needs to run for any number of student records up to 100.

You will need to create a driver program to run your program. The driver program should create a file handle, open the file and send the file handle to a function in your program to read in the input. Nothing else will be accomplished in the driver program. The driver program will NOT print anything, it should contain a line of code that calls a function to start the execution of what is needed (this is where you send in the file handle). Remember to store the Struct declaration in your .h file!

Hint* you will need to write several functions to accomplish this goal. Remember, each function should do one thing only! When you call a function with a file handle, the receiving function must store it as a file pointer (FILE * file_ptr). Break the program down into smaller parts and accomplish each part separately.

Grading criteria (100 pts total):

• Your program will receive no credit if it does not compile
• Proper coding convention, indentation and meaningful identifiers (10 pts)
• Correct output (60 pts)
• Correct usage of multiple functions to accomplish goal (20 pts)
• Correct usage of struct array to store student records (10 pts)

student_records.txt :

David 1234 4.0 44
Sally 4321 3.6 21
Bob 1111 2.5 20
Greg 9999 1.8 28
Heather 0000 3.2 22
Keith 3434 2.7 40
Pat 1122 1.0 31
Ann 6565 3.0 15
Mike 9898 2.0 29
Steve 1010 2.2 24
Kristie 2222 3.9 46

Answer 1

Solution:

student.h

#include<stdio.h>

struct Student{

    char name[50];

    int id;

    float gpa;

    int age;

};

student_driver.c

#include<stdio.h>

#include<string.h>

#include "student.h"

void printAvgGPA(struct Student s[],int n)

{

    float total=0,avg;

    for(int i=0;i<n;i++)    

        total=total+s[i].gpa;

    

    avg=total/n;

    printf("\nAverage GPA is %f",avg);    

}

void printHighestGPAStudent(struct Student s[],int n)

{

    float highest=s[0].gpa;

    char name[100];

    strcpy(name,s[0].name);

    for(int i=0;i<n;i++)

    {

        if(s[i].gpa>highest)

        {

            highest=s[i].gpa;

            strcpy(name,s[i].name);

        }

    }

    printf("\nStudent with highest GPA is %s",name);

}

void studentWithHigherthanAvg(struct Student s[],int n)

{

    float total=0,avg;

    int higher=0;

    for(int i=0;i<n;i++)    

        total=total+s[i].gpa;

    

    avg=total/n;

    for(int i=0;i<n;i++)

    {

        if(s[i].gpa>avg)

            higher++;

    }

    printf("\nNumber of students with GPA higher than Average GPA is %d",higher);

}

void printAvgAge(struct Student s[],int n)

{

    int avgage=0;

    for(int i=0;i<n;i++)

        avgage=avgage+s[i].age;

    

    avgage=avgage/n;

    printf("\nAverage age of students is %d",avgage);

}

void readfile(FILE *fp)

{

    struct Student s[100];

    int i=0,n;

    while(!feof(fp)){

    fscanf(fp,"%s%d%f%d",s[i].name,&s[i].id,&s[i].gpa,&s[i].age);

    i++;

    }

    printAvgGPA(s,i);

    printHighestGPAStudent(s,i);

    studentWithHigherthanAvg(s,i);

    printAvgAge(s,i);

}

void main()

{

    FILE *fp;

    char inpfile[100];

    printf("Enter a file name:");

    scanf("%s",inpfile);

    fp=fopen(inpfile,"r");

    readfile(fp);

}

Output: