SGPA Calculator Project - Md. Maruf Sarker - Green University Of Bangladesh - Dedicated to Suborno Maksuda - Dhaka International University

sgpa-calculator.c

// Project Name: SGPA Calculator
// Author: Md. Maruf Sarker
// Date: 3 August, 2022
// Language: C
// Version: 1.0
// Green University of Bangladesh - 221 Batch
// Time Spend: 10:00 pm -12:40 am

#include <stdio.h>

float grade(float num, float credit, float grade){
    if(num > 0 && num < 40){
        printf("\t\t Grade: F and Grade Point: 0.00\n");
        grade = 0.00 * credit;
    }else if(num >= 40 && num < 45){
        printf("\t\tGrade: D and Grade Point: 2.00\n");
        grade = 2.00 * credit;
    }else if(num >= 45 && num < 50){
        printf("\t\tGrade: (C Regular) and Grade Point: 2.25\n");
        grade = 2.25 * credit;
    }else if(num >= 50 && num < 55){
        printf("\t\tGrade: (C Plus) and Grade Point: 2.50\n");
        grade = 2.50 * credit;
    }else if(num >= 55 && num < 60){
        printf("\t\tGrade: (B Minus) and Grade Point: 2.75\n");
        grade = 2.75 * credit;
    }else if(num >= 60 && num < 65){
        printf("Grade: (B Regular) and Grade Point: 3.00\n");
        grade = 3.00 * credit;
    }else if(num >= 65 && num < 70){
        printf("\t\tGrade: (B Plus) and Grade Point: 3.25\n");
        grade = 3.25 * credit;
    }else if(num >= 70 && num < 75){
        printf("\t\tGrade: (A minus) and Grade Point: 3.50\n");
        grade = 3.50 * credit;
    }else if(num >= 75 && num < 80){
        printf("\t\tGrade: (A regular) and Grade Point: 3.75\n");
        grade = 3.75 * credit;
    }else if(num >= 80 && num <= 100){
        printf("\t\tGrade: (A plus) and Grade Point: 4.00\n");
        grade = 4.00 * credit;
    }
    return grade;
}

int main(){
    int i = 0;
    float n1,n2,n3,n4,n5;
    float gd = 0.0,grade1,grade2,grade3,grade4,grade5,total_grade = 0.0,sgpa = 0.0;


    printf("\t\t\t\tMost Welcome!\n");
    printf("\t\tPlease enter the marks obtained in each subject:\n\n ");

    // CSE-103
    condition1:
    printf("Course Code:(CSE-103); Course Title: Structured Programming; Credit(s):(3): ");
    scanf("%f",&n1);

    if(n1 < 0 || n1 > 100){
        printf("\n\t\tIt is an invalid number.Please input number between 1 to 100 again.\n");
        goto condition1;
    }
    if(n1 > 0 || n1 < 100){
        grade1 = grade(n1,3,gd);
    }
    if(n1 > 0 && n1 < 40){
        i++;
    }

    // CSE-104
    condition2:
    printf("\nCourse Code:(CSE-104); Course Title: Structured Programming Lab; Credit(s):(1): ");
    scanf("%f",&n2);

    if(n2 < 0 || n2 > 100){
        printf("\n\t\tIt is an invalid number.Please input number between 1 to 100 again.\n");
        goto condition2;
    }
    if(n2 > 0 || n2 < 100){
        grade2 = grade(n2,1,gd);
    }
    if(n2 > 0 && n2 < 40){
        i++;
    }

    // PHY-103
    condition3:
    printf("\nCourse Code:(PHY-103); Course Title: Electricity and Magnetism; Credit(s):(3): ");
    scanf("%f",&n3);

    if(n3 < 0 || n3 > 100){
        printf("\n\t\tIt is an invalid number.Please input number between 1 to 100 again.\n");
        goto condition3;
    }
    if(n3 > 0 || n3 < 100){
        grade3 = grade(n3,3,gd);
    }
    if(n3 > 0 && n3 < 40){
        i++;
    }

    // PHY-104
    condition4:
    printf("\nCourse Code:(PHY-104); Course Title: Electricity and Magnetism Lab; Credit(s):(1): ");
    scanf("%f",&n4);

    if(n4 < 0 || n4 > 100){
        printf("\n\t\tIt is an invalid number.Please input number between 1 to 100 again.\n");
        goto condition4;
    }
    if(n4 > 0 || n4 < 100){
        grade4 = grade(n4,1,gd);
    }
    if(n4 > 0 && n4 < 40){
        i++;
    }

    // MAT-101
    condition5:
    printf("\nCourse Code:(MATH-101); Course Title: Linear Algebra & Co-ordinate Geometry; Credit(s):(3): ");
    scanf("%f",&n5);

    if(n5 < 0 || n5 > 100){
        printf("\n\t\tIt is an invalid number.Please input number between 1 to 100 again.\n");
        goto condition5;
    }
    if(n5 > 0 || n5 < 100){
        grade5 = grade(n5,3,gd);
    }
    if(n5 > 0 && n5 < 40){
        i++;
    }

    total_grade = grade1 + grade2 + grade3 + grade4 + grade5;
    sgpa = total_grade / 11.00;

    if(i == 1 || i == 2) printf("Incomplete Course\n");
    else if(i== 3 || i == 4 || i == 5) printf("Re-admission Please\n");
    else if(i == 0) printf("\n\n\n\t\tThe SGPA of this student is :%.2f\n ",sgpa);

    printf("\n\t\t\t\t\tThank you!\n");

    return 0;
}