C Student Data Management: Code Analysis & Implementation

Posted on Jan 12, 2025 in Telecommunication Technologies

This document presents a C program designed for managing student information. It includes header files, source code, and a main function demonstrating the program’s functionality.

studentinfo.h

#ifndef STUDENTINFO_H
#define STUDENTINFO_H
#define MAX_SIZE 10

typedef struct student{
   
    char name[30];
    char student_Ids[50]; 
    int student_grades[10];
    int gradeavg;
    
}student;

void print_students (student[], int);
student return_student(student[], int, char []);


#endif

studentinfo.c

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

void print_students (student student_list [], int size){
    int i;
    int studentavg;
    for (i=0;i<size;i++){
        student_list[i].gradeavg = (student_list[i].student_grades[0] + student_list[i].student_grades[1] + student_list[i].student_grades[2]) /3;
    }
    for (i=0; i < size; i++){
        printf("%s %s %d\n", student_list[i].name, student_list[i].student_Ids, student_list[i].gradeavg);
    }
}

student return_student(student student_list[], int size, char user_provided_code[] ){
    
    int i;
    
    for (i=0; i<size; i++){
        
        if (strcmp(student_list[i].student_Ids, user_provided_code)==0){
            return student_list[i];
        }
        
    }
    
}

main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "studentinfo.h"



int main(int argc, char** argv) {
    int size = 3;
    student student_list[MAX_SIZE];
    
    srand(2);
    
    strcpy (student_list[0].name, "Abraham McLovin");
    strcpy (student_list [0].student_Ids , "abc123");
    student_list [0].student_grades[0] = 98;
    student_list [0].student_grades[1] = 91;
    student_list [0].student_grades[2] = 97;
    
    strcpy (student_list[1].name, "Jorge John");
    strcpy (student_list [1].student_Ids , "def456");
    student_list [1].student_grades[0] = 26;
    student_list [1].student_grades[1] = 48;
    student_list [1].student_grades[2] = 51;
    
    strcpy (student_list[2].name, "Jose Juan");
    strcpy (student_list [2].student_Ids , "ghi789");
    student_list [2].student_grades[0] = 78;
    student_list [2].student_grades[1] = 70;
    student_list [2].student_grades[2] = 75;
    
   
    char user_provided_code[7];
    
    student results;
    
    int user_opt = 4;
    
    while(user_opt > 0){
        
        printf("please provide the operation you are looking for: \n");
        printf("0 : exit\n");
        printf("1 : print all students\n");
        printf("2 : print SPECIFIC student information:\n");
        
        scanf("%d",&user_opt);
        
        switch(user_opt){
           case 0:
                return 0;
                break;
                
            case 1:
                print_students(student_list,size);
                printf("\n");
                break;
                
            case 2:
                printf("please provide the student ID you are looking for:\n");
                scanf("%s",user_provided_code);
                results = return_student(student_list, size,user_provided_code);
                printf("%s %s %d\n",results.name, results.student_Ids,results.student_grades[10] );
                break;
                
            default :
                printf("please provide a valid input");
                break;
        }
        }
    
    
    
    return 0;
}

Key Features:

• Data Structure: Uses a struct named student to store student details.
• Functions: Includes functions to print all students and return a specific student by ID.
• User Interaction: Provides a menu-driven interface for user interaction.

Potential Improvements:

• Error Handling: Add input validation and error handling.
• Grade Array Access: Fix the out-of-bounds access in the main function when printing a specific student’s grade.
• Dynamic Memory: Consider using dynamic memory allocation for scalability.