Question

//What's wrong with my code?

Letter grades are A B C D and F, possibly followed by + or - Their nu- meric values are 4, 3, 2, 1 and O. In our scheme, there is no F+ or F-, or Ar. Adding a + to the grade increases the numeric value by 0.3, a-de- creases it by 0.3.

int run()
{
   // Don't change anything inside this function
   printTitle();
   string letterGrade = getInput();
   double points = letterToPoints(letterGrade);
   printReport(points);

return 0;
}

// Implement your functions here

void printTitle()
{
    cout << STUDENT << "-H02-Grade Calculator" << endl;
   cout << "-----------------------------------------" << endl;
}
string getInput()
{
   cout << "Enter your letter grade: ";
   string gradeIn;
   getline(cin, gradeIn);
   cin >> gradeIn;

   return gradeIn;
}
double letterToPoints(stringIn letterGrade)
{
   double gradePoints = -1;

   if (gradeIn == "A") gradePoints = 4.0;
   else if (gradeIn == "A-") gradePoints = 3.7;
   else if (gradeIn == "B+") gradePoints = 3.3;
   else if (gradeIn == "B") gradePoints = 3.0;
   else if (gradeIn == "B-") gradePoints = 2.7;
   else if (gradeIn == "C+") gradePoints = 2.3;
   else if (gradeIn == "C") gradePoints = 2.0;
   else if (gradeIn == "C-") gradePoints = 1.7;
   else if (gradeIn == "D+") gradePoints = 1.3;
   else if (gradeIn == "D") gradePoints = 1.0;
   else if (gradeIn == "D-") gradePoints = 0.7;
   else if (gradeIn == "F") gradePoints = 0.0;
   return 0.0;
}
void printReport(double points)
{
   cout << fixed << showpoint << setprecision(1);
   if (gradePoints >= 0)
   {
       cout << "Grade value is [" << points << "]" << endl;
   }
   else
   {
       string errorMessage;
       if (gradeIn == "A+" || gradeIn == "F+" || gradeIn == "F-")
       {
           errorMessage = "INVALID GRADE COMBINATION";
       }
       cout << "Grade value is [" << errorMessage << "]" << endl;
       else if (gradeIn.size() >= 1 && gradeIn.at(0) != 'A' && gradeIn.at(0) != 'B' && gradeIn.at(0) != 'C' && gradeIn.at(0) != 'D' && gradeIn.at(0) != 'F')
       {
           errorMessage = "INVALID LETTER GRADE";
       }
       else
       {
           errorMessage= "Invalid Input" ;
       }
   }

Answer 1

Here is corrected code:

#include<bits/stdc++.h>
using namespace std;
void printTitle()
{
cout << "STUDENT" << "-H02-Grade Calculator" << endl;
cout << "-----------------------------------------" << endl;
}
string getInput()
{
cout << "Enter your letter grade: ";
string gradeIn;
getline(cin, gradeIn);
cin >> gradeIn;

return gradeIn;
}
double letterToPoints(string gradeIn)
{
double gradePoints = -1;

if (gradeIn == "A") gradePoints = 4.0;
else if (gradeIn == "A-") gradePoints = 3.7;
else if (gradeIn == "B+") gradePoints = 3.3;
else if (gradeIn == "B") gradePoints = 3.0;
else if (gradeIn == "B-") gradePoints = 2.7;
else if (gradeIn == "C+") gradePoints = 2.3;
else if (gradeIn == "C") gradePoints = 2.0;
else if (gradeIn == "C-") gradePoints = 1.7;
else if (gradeIn == "D+") gradePoints = 1.3;
else if (gradeIn == "D") gradePoints = 1.0;
else if (gradeIn == "D-") gradePoints = 0.7;
else if (gradeIn == "F") gradePoints = 0.0;
return 0.0;
}
void printReport(double gradePoints,string gradeIn)
{
cout << fixed << showpoint << setprecision(1);
if (gradePoints >= 0)
{
cout << "Grade value is [" << gradePoints << "]" << endl;
}
else
{
string errorMessage;
if (gradeIn == "A+" || gradeIn == "F+" || gradeIn == "F-")
{
errorMessage = "INVALID GRADE COMBINATION";
}
else if (gradeIn.size() >= 1 && gradeIn.at(0) != 'A' && gradeIn.at(0) != 'B' && gradeIn.at(0) != 'C' && gradeIn.at(0) != 'D' && gradeIn.at(0) != 'F')
{
errorMessage = "INVALID LETTER GRADE";
}
else
{
errorMessage= "Invalid Input" ;
}
cout << "Grade value is [" << errorMessage << "]" << endl;
}
}
int run()
{
// Don't change anything inside this function
printTitle();
string letterGrade = getInput();
double points = letterToPoints(letterGrade);
printReport(points,letterGrade);

return 0;
}

// Implement your functions here

note:functions must be declared before its used there were many such instances in your program also some variables were mistyped kindly see your code and corrected code for more information.

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