#include // cin & cout #include // setprecision & fixed using namespace std; /***************************************************************************** * This program will take as many inputs from a user of their letter as is * needed and will output the total grade points as well as the GPA for * the user. * ***************************************************************************/ int main() { const int LOOP_EXIT = 3; char letterGrade; // User Input for Letter Grade int gradeCount; // Runing count of grades entered int loopCount; // Number times For loop has run float gpa; // Overall GPA int totalGradePoints; // Total sum of grade points entered int gradePoint; // Value assigned to letterGrade 0-4 // Overall FOR LOOP. Will run LOOP_EXIT number of times. for (loopCount = 1; loopCount <= LOOP_EXIT; loopCount = loopCount + 1) { gradeCount = 1; totalGradePoints = 0.0; cout << "TEST CASE # " << loopCount << ": " << endl; //Testing Input - Input must be upper or lower case (a,b,c,d,f,x) do { cout << "\tEnter Letter Grade #" << gradeCount << ": "; cin.get(letterGrade); cin.ignore(10000, '\n'); letterGrade = toupper(letterGrade); if ( letterGrade != 'A' && letterGrade != 'B' && letterGrade != 'C' && letterGrade != 'D' && letterGrade != 'F' && letterGrade != 'X') { cout << "Invalid input. Please enter only A, B, C, D, F" << endl; } // end of IF }while ( letterGrade != 'A' && letterGrade != 'B' && letterGrade != 'C' && letterGrade != 'D' && letterGrade != 'F' && letterGrade != 'X'); // END of DO WHILE Loop //WHILE LOOP will run until input == x or X, Get input of letterGrade // and assigns gradePoint depending on input while( letterGrade != 'X') { gradeCount = gradeCount + 1; switch (letterGrade) { case 'A' : gradePoint = 4; break; case 'B' : gradePoint = 3; break; case 'C' : gradePoint = 2; break; case 'D' : gradePoint = 1; break; default : gradePoint = 0; break; } //Accumulator for total grade points of inputs totalGradePoints = totalGradePoints + gradePoint; //Testing Input - Input must be upper or lower case (a,b,c,d,f,x) do { cout << "\tEnter Letter Grade #" << gradeCount << ": "; cin.get(letterGrade); cin.ignore(10000, '\n'); letterGrade = toupper(letterGrade); if ( letterGrade != 'A' && letterGrade != 'B' && letterGrade != 'C' && letterGrade != 'D' && letterGrade != 'F' && letterGrade != 'X') { cout << "Invalid input. Please enter only A, B, C, D, F" << endl; } // end of IF }while ( letterGrade != 'A' && letterGrade != 'B' && letterGrade != 'C' && letterGrade != 'D' && letterGrade != 'F' && letterGrade != 'X'); // END of DO While Loop } // END while( letterGrade == 'A' ||letterGrade == 'B' // || letterGrade == 'C' || letterGrade == 'D' // || letterGrade == 'F') gpa = float(totalGradePoints) / (gradeCount - 1); //checking if totalGradePoints is 0, so will not output "nan" if (totalGradePoints != 0 ) { cout << setprecision(2) << fixed; cout << "Total Grade Points: " << totalGradePoints << endl; cout << "GPA: " << gpa << endl << endl << endl; } // END IF (totalGradePoints != 0 ) } // End for(loopCount = 1; loopCount <= LOOP_EXIT; loopCount = loopCount + 1) return 0; }

GPA Calculator