useing a function to match arrays

[andrew d]

The program i'm writing needs an array of string objects to hold five names, an array of the five letter grades, and five arrays of four 2-d arrays for each student's test scores. the scores are then averaged. Function"matchNameToGrade " is supposed to...well.. match letergrades Array to a subset in the testscores Array. ei: "if the score is 90 the letter is A." is this the correct way to do this?

  #include <iostream>
#include <iomanip>
using namespace std;

char matchGradesToNameFunc(char, double);


int main() {
 int name; 
  char letterGradesArray[5]={'A','B','C','D','F'};
string studentNameArray[4];
  double testScores[4];
 
double testAverage[4];
{
  for (int i=0; i<5; i++)
  {
    cout << "\nEnter " << (i) << " student "<< " name ";
    cin >> studentNameArray[i];
  }
  }
//double matchGradeToNameFunc(char letterGradesArray);
  for (int j=0;j<5; j++)
  {
    cout << "\nEnter " <<" student "<<j<< " score.";
    cin >> testScores[j];
  }
  
     
     
      

  return 0;
}   
double matchGradeToNameFunc(char letterGradesArray, double testScores)
{
if ( letterGradesArray>=90)
{
double testScores[j]=lettergradesArray[0]
}

  
}


return letterGradesArray; 
} 
// while (testScores <0)
//       {
//         cout << "\nTest scoresub should be between 0 and 100" << endl;
//         cout << "Enter test scoresub: ";
//         cin >> testScores[i][j];
//       }
//     }
//    }
  

 
  //   for (int j=0;j<4;j++)
  //   testAverage[i] += testScores[i][j];
  //   testAverage[i] /= 4;
  //   gradesArray[i] = letterGradesArray[testAverage[i]];
  // cout << "\nStudent Name\tAverage Scoresub\tLetter Grade" << endl;
  // for (int i=0;i<5;i++)
  // {
    

  //   cout << studentNameArray [i] << "\t\t" << setprecision(2) << testAverage[i] << "\t\t" << gradesArray[i] << endl;
  // }


// }
// include <iostream>
// #include <iomanip> 
// #include <string>
// using namespace std;


// void getTestScore(string[],int[],int);

// int getTotal(int [],int);

// int largestElement(int[],int);
// int smallestElement(int[], int);

// int main()
// {const int salsaTypeSub=5;
//   string namesArray[salsaTypeSub]={"Mild","Medium","Sweet","Hot","Zesty"};
//   //Array of SAles for salsa types
//   int salesArray[salsaTypeSub];
// int names[5];
// //Total number of jars sold
// int totalJarsSold;

// //subscript of most sold salsa
// int highSalesProduct;

// //subscripts of least sold salsa
// int lowSalesProduct;

// //Get number of jars sold of each type of salsa
// getTestScore(namesArray, salesArray, salsaTypeSub);

//  //get total sales  and high and low Sales Products
//  totalJarsSold=getTotal(salesArray, salsaTypeSub);
// highSalesProduct=largestElement(salesArray, salsaTypeSub);
// lowSalesProduct = smallestElement(salesArray, salsaTypeSub);

// //Display the sales report header.
// cout<< endl <<endl;
// cout <<" Salsa Sales Report \n\n";
// cout <<"Name          Jars Sold \n ";
// cout << "_________________________\n";
// //Display the name and Jars sold of each type.
// for (int salsaType =0; salsaType < salsaTypeSub; salsaType++)
// {
//   cout << setw(6)<<namesArray[salsaType]
//   <<setw(21)<< salesArray[salsaType]
//   << endl;
  
// }

// //Display total sales hightes seller and lowest seller.
// cout << "\n Total Sales:" <<setw(15)<<totalJarsSold<<endl;
// cout<< "High Seller:" << namesArray[highSalesProduct]<<endl;
// cout <<"Low Seller:" << namesArray[lowSalesProduct]<<endl; 
// return 0;}

// void  getTestScore(string names[], int salesArray[],int size)
// { 
//  { for (int type = 0; type <size; type++)
//   //Get the Nmber of jars sold.
// { cout << "How many jars of " <<names[type]
//  <<" salsa did we sell last month? \n"<<endl;
// cin.clear();
//  cin >> salesArray[type];
 

//  // Validate the input.
//  while (salesArray[type] <0)
//  {
// cout <<"Jar sold must be 0 or more. Please re-enter: ";
//  cin >>salesArray[type];
//   } 
//  }
// }
// }



// int getTotal (int array [], int size)
// {
// int total=0;
// for (int pos =0; pos<size; pos++)
// total+=array[pos];

// return total;
// }

// int largestElement (int salsa[],int size)
// {int i=0;
// for (int pos=1;pos<size;pos++)
// if (salsa[pos] > salsa[i])
// {
//   i=pos;
// }
// return i;
// }

// int smallestElement (int array[],int size)
// {int i=0;
// for (int pos=1;pos<size;pos++)
// if (array[pos] <array [i])
// {
//   i=pos;
// }
// return i;
// } 

[ne555]

char letter_grade(double score){
   if (score>=90) return 'A';
   if (score>=80) return 'B';
   //...
   return 'F';
}


for (int K=0; K<n; ++K)
   cout << letter_grade(test_score[K]) << ' ';

[jonnin]

this could get you in trouble ... but the work smarter answer is something like this
string grade = "FFFFFFDCBAA";
answer = grade[avg/10]; 0 /10 = 0 -> F, 53/10 = 5 -> F, 62/10 = 6 ->D, 100/10 = 10 ->A etc