How to Calculate GPA/CGPA || GPA Calculator Step by Step in C++ ||Sourc...

// Special Thanks to Mr. Muhammad Hashmi 

#include<iostream>

#include<conio.h>

using namespace std;

//First Function

void calculateGPA()

{   // SubScribe to MH Computer Academy

//https://www.youtube.com/watch?v=LRPbCtN1EbI&t=907s

   int NoOfSubs;

   double credits[NoOfSubs];

   double points[NoOfSubs];

   double sum=0;

   double total;

   double totalCredits=0;

   system("cls");

   cout<<"------------------------------------------------"<<endl;

   cout<<"|                GPA Calculator                |"<<endl;

   cout<<"------------------------------------------------"<<endl;

   cout<<"Enter No of Subjects: ";

   cin>>NoOfSubs;

   cout<<endl;

   for(int i=1;i<=NoOfSubs;i++)

   {

    cout<<"Enter Credits of subjects:"<<i<<":";

    cin>>credits[i];

    cout<<"Enter Points of Subjects:"<<i<<":";

    cin>>points[i];

    cout<<"------------------------------------------------"<<endl;

   }

   for(int i=1;i<=NoOfSubs;i++)

   {

    total=credits[i]*points[i];

    sum +=total;

   }

   for(int i=1;i<=NoOfSubs;i++)

   {

    totalCredits += credits[i];

   }

   cout<<endl<<endl;

   cout<<"Total Points: "<<sum<<endl;

   cout<<"Total Credits:"<<totalCredits<<endl;

   cout<<"Total GPA:"<<sum/totalCredits<<endl;

   

   cout<<"\n Press any key to go back to Main Menu...";

   getch();

   

   

}

//Second Function

void calculateCGPA()

{

int NoOfSems;

system("cls");

   cout<<"------------------------------------------------"<<endl;

   cout<<"|                GPA Calculator                |"<<endl;

   cout<<"------------------------------------------------"<<endl;

   cout<<"Enter No of Semesters: ";

   cin>>NoOfSems;

   double semesters[NoOfSems];

   double semTotal=0;

   for(int i=1;i<=NoOfSems; i++)

   {

    cout<<"Enter Semester #"<<i <<"GPA:";

    cin>>semesters[i];

   }

for(int i=1;i<=NoOfSems; i++)

{

semTotal += semesters[i];

}

cout<<"Your CGPA :"<<semTotal/NoOfSems <<endl;

cout<<"\n Press any key to go back to Main Menu...";

getch();

   

}

//Third Function

void instructions()

{

system("cls");

cout<<endl<<endl;

cout<<"How to Calculate GPA and CGPA :"<<endl;

cout<<"-------------------------------"<<endl<<endl;

cout<<"GPA = sum of (credit*point) / total of credits "<<endl;

cout<<"CGPA = sum of GPA / number of semesters "<<endl;

cout<<endl<<endl;

cout<<"Grade - Point Table : "<<endl;

cout<<"------------------------------------------------"<<endl;

cout<<"\tGrade \t\t 4.0 Scale"<<endl;

cout<<"------------------------------------------------"<<endl<<endl;

cout<<"\tA+ \t\t 4.0 "<<endl;

cout<<"\tA \t\t 4.0 "<<endl;

cout<<"\tA- \t\t 3.7 "<<endl;

cout<<"\tB+ \t\t 3.3 "<<endl;

cout<<"\tB \t\t 3.0 "<<endl;

cout<<"\tB- \t\t 2.7 "<<endl;

cout<<"\tC+ \t\t 2.3 "<<endl;

cout<<"\tC \t\t 2.0 "<<endl;

cout<<"\tC- \t\t 1.7 "<<endl;

cout<<"\tD+ \t\t 1.3 "<<endl;

cout<<"\tD \t\t 1.0 "<<endl;

cout<<"\tD- \t\t 0,7 "<<endl;

cout<<"\tF \t\t 0.0 "<<endl;

cout<<"\n Press any key to go back to Main Menu...";

getch();

}

int main()

{

do

{

system("cls");

cout<<"------------------------------------------------"<<endl;

cout<<"|                GPA Calculator                |"<<endl;

cout<<"------------------------------------------------"<<endl;

cout<<"1. Calculate GPA"<<endl;

cout<<"2. Calculate CGPA"<<endl;

cout<<"3. How to Calculate GPA?"<<endl;

cout<<"4. Quit"<<endl<<endl;

cout<<"Select Option:";

char op=0;

     cin>>op;

     

     if(op == '1') calculateGPA();

     else if(op == '2') calculateCGPA();

     else if(op == '3') instructions();

     else if(op == '4') exit(0);

}while(1);

return 0;

getch();

}