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#include <iostream>
#include <string>
using namespace std;
struct studenttype{
string firstname;
string lastname;
unsigned studentnumber;
unsigned numberofunits;
unsigned gradepoints;
};
void output(const studenttype& student_info);
void takeclass(studenttype& student, int unitstaken, char grade);
double gpa(const studenttype& studentnewgpa);
int main (){
double studentonegpa;
double studenttwogpa;
studenttype studentone = {"John", "Smith", 123456789, 0, 0 };
studenttype studenttwo = {"Mary", "Jones", 123456790, 6, 24};
output(studentone);
output(studenttwo);
takeclass(studentone, 3, 'A');
takeclass(studenttwo, 4, 'B');
studentonegpa = gpa(studentone);
cout<< "John Smith's gpa: "<< studentonegpa<< endl;
studenttwogpa = gpa(studenttwo);
cout<< "Mary Jones's gpa: "<< studenttwogpa<< endl;
}
void output(const studenttype& student_info){
cout << student_info.firstname << student_info.lastname << ", #" << student_info.studentnumber << ": " << student_info.numberofunits
<< " units and " << student_info.gradepoints << " grade points" <<endl;
}
void takeclass(studenttype& student, int unitstaken, char grade){
switch(grade)
{
case 'A':
student.gradepoints = student.gradepoints + (unitstaken * 4);
break;
case 'B':
student.gradepoints = student.gradepoints + (unitstaken * 3);
break;
case 'C':
student.gradepoints = student.gradepoints + (unitstaken * 2);
break;
case 'D':
student.gradepoints = student.gradepoints + (unitstaken * 1);
break;
case 'F':
student.gradepoints = student.gradepoints + (unitstaken * 0);
break;
default:
cout << grade << " is not a valid letter grade" << endl;
return;
}
student.numberofunits = student.numberofunits + unitstaken;
}
double gpa(const studenttype& studentnewgpa){
if (studentnewgpa.numberofunits == 0)
return(0);
else
return(studentnewgpa.gradepoints/studentnewgpa.numberofunits);
}
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