C Example

#include <stdio.h>

/*
    Quiz score = 10 per each
    Midterm & Final score = 100 per each
    Total Percentage = 100% consists of
    1.) Quizes 25%
    2.) Midterm 25%
    3.) Final 50%
*/

//Enum for Grade
enum grades {
    A = 90,
    B = 80,
    C = 70,
    D = 60,
};

// Student Structure
struct student {
    char grade;
    float quiz_1;
    float quiz_2;
    float sum_quiz;
    float midterm;
    float final;
    float actual_score;
};

void calGrade(char *grade, float *quiz_1, float *quiz_2, float *sum_quiz, float *midterm, float *final, float *actual_score) {
    //Call Enum
    enum grades g;
    //Change to real percentage
    *sum_quiz = ((*quiz_1 + *quiz_2)*5)/4;
    *midterm = *midterm/4;
    *final = *final/2;
    // Sum up the percentages
    *actual_score = *sum_quiz + *midterm + *final;
    if (*actual_score >= A) {
        *grade = 'A';
    } else if (*actual_score >= B) {
        *grade = 'B';
    } else if (*actual_score >= C) {
        *grade = 'C';
    } else if (*actual_score >= D) {
        *grade = 'D';
    } else {
        *grade = 'F';
    }
}

void main () {
    // Declare class student
    struct student s;

    // Ask for input
    printf("Insert your 1st quiz score: ");
    scanf("%f", &s.quiz_1);

    printf("Insert your 2nd quiz score: ");
    scanf("%f", &s.quiz_2);

    printf("Insert your midterm score: ");
    scanf("%f", &s.midterm);

    printf("Insert your final score: ");
    scanf("%f", &s.final);

    // Compute and give student grade
    calGrade(&s.grade, &s.quiz_1, &s.quiz_2, &s.sum_quiz, &s.midterm, &s.final, &s.actual_score);
    //Seperate
    printf("--------------------------------\n");
    //Print Result
    printf("Quizes: %.1f out of 25%%\nMidterm: %.1f out of 25%%\nFinal: %.1f out of 50%%\nActual Percentage: %.1f\nGrade: %c\n", s.sum_quiz, s.midterm, s.final, s.actual_score, s.grade);
}