Recap: Student Data Struct

Part of the Logic & Flow section of Coddy's C journey — lesson 43 of 63.

Challenge

Easy

Create a C program that demonstrates the complete workflow of struct usage with a student management system. Your program should:

Define a struct named Student with the following members:
- An integer id to store the student's ID number
- A float grade to store the student's grade
In the main function, create a Student variable named student1
Read the student's ID and grade from input using scanf:
- Read an integer for the ID and store it in student1.id
- Read a float for the grade and store it in student1.grade
After reading the input, perform the following validation and calculations:
- If the grade is greater than 100.0, set it to 100.0
- If the grade is less than 0.0, set it to 0.0
- Calculate a bonus grade by adding 5.0 to the current grade (after validation)
- If the bonus grade exceeds 100.0, set the bonus grade to 100.0
Print the student information in this exact format:
- Student Information:
- ID: [id]
- Original Grade: [grade]
- Bonus Grade: [bonus_grade]
- Grade Status: [status]
The grade status should be determined as follows:
- If the original grade is 90.0 or above: Excellent
- If the original grade is 80.0 to 89.9: Good
- If the original grade is 70.0 to 79.9: Average
- If the original grade is below 70.0: Needs Improvement

This challenge tests your understanding of struct definition, variable creation, member access using the dot operator, input handling with scanf, and conditional logic for data validation and processing. You'll practice the complete workflow of working with structs in a practical scenario.

Try it yourself

#include <stdio.h>

// TODO: Define the Student struct here

int main() {
    // TODO: Create a Student variable named student1
    
    // Read input
    int id;
    float grade;
    scanf("%d", &id);
    scanf("%f", &grade);
    
    // TODO: Store the input values in the struct members
    
    // TODO: Implement grade validation and bonus calculation
    
    // TODO: Determine grade status
    
    // Output the results
    printf("Student Information:\n");
    printf("ID: %d\n", /* TODO: print student ID */);
    printf("Original Grade: %.1f\n", /* TODO: print original grade */);
    printf("Bonus Grade: %.1f\n", /* TODO: print bonus grade */);
    printf("Grade Status: %s\n", /* TODO: print grade status */);
    
    return 0;
}

All lessons in Logic & Flow

1Pointers Fundamentals

What is a Pointer?Declaring Pointers The Address-Of Operator (&)The Dereference Operator (*)NULL Pointers Recap: Pointer Basics

4Project: Simple Text Utility

Project Overview Counting Characters

Counting Vowels

Convert to Uppercase

Final Output

7Structures (structs)

What is a Struct?Declaring a Struct Creating Struct Variables Accessing Struct Members Initializing StructsRecap: Student Data Struct

10Enums and Typedef

enum for Named Constants Declaring and Using Enums Enums in Switch Statements Using typedef for Type Aliases typedef with Structs Recap: Typedef & Enum Practice