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#include <iostream>
using std::cin;
using std::cout;
using std::endl;
#include <cstdlib>
int readArray(int,int[]);
int avg(int, const int[]);
int stat(int, const int[], int&,int&,int&);
int histogram(int,const int[],int[]);
int main()
{
const int MAX_SCORE = 50; //the maximum # of scores that a user can enter
int score[MAX_SCORE]; //create storage for up to 50 scores
int nScores = readArray(MAX_SCORE, score); //read array and return count
int avgScore;
int minScore;
int maxScore;
if (stat(nScores, score, avgScore, minScore, maxScore) == 0)
{
cout << "The number of scores entered is: " << nScores << endl;
cout << "The average of the data entered is: " << avgScore << endl
<< "The maximum score entered is: " << maxScore << endl
<< "The minimum score entered is: " << minScore << endl;
int grade[5] = {0}; //={} is for newer compilers only
histogram(nScores, score, grade);
cout << "As: " << grade[0] << endl;
cout << "Bs: " << grade[1] << endl;
cout << "Cs: " << grade[2] << endl;
cout << "Ds: " << grade[3] << endl;
cout << "Fs: " << grade[4] << endl;
}
else
cout << "no data" << endl;
}
int readArray(int n,int accepted[])
{
char scores[100];
cout << endl;
//prompt user for input
cout << "Enter up to 50 test scores (0-100) after last score enter -1 to end: " << endl;
int scoresEntered = 0;
//read the scores from the keyboard, space and/or newline delimited
for (int i = 0; i < n; i++)
{
cin >> scores;
cin.ignore(0, ' ');
int entered = atoi(scores);
accepted[i] = entered;
if(accepted[i] < 0)
break;
else
scoresEntered++;
}
return scoresEntered;
}
int avg(int n,const int accepted[])
{
int total = 0;
if(n == 0)
{
return 0;
}
for(int i = 0;i < n; i++)
{
total = total + accepted[i];
}
return total / n;
}
int stat(int n,const int accepted[],int& avgs,int& min,int& max)
{
if(accepted[0] < 0)
{
return 1;
}
if(n == 0)
{
return 0;
}
avgs = avg(n, accepted);
min = accepted[0];
max = accepted[0];
for(int i = 0;i < n;i++)
{
if(accepted[i] < min)
{
min = accepted[i];
}
if(accepted[i] > max)
{
max = accepted[i];
}
}
return 0;
}
int histogram(int nScores, const int accepted[], int letterGrade[])
{
if(accepted[0] < 0)
{
return 0;
}
if(nScores == 0)
{
return 1;
}
for(int i = 0; i < nScores; i++)
{
if(accepted[i] >= 90)
{
letterGrade[0]++;
}
else if(accepted[i] >= 80 && accepted[i] <= 89)
{
letterGrade[1]++;
}
else if(accepted[i] >= 70 && accepted[i] <= 79)
{
letterGrade[2]++;
}
else if(accepted[i] >= 60 && accepted[i] <= 69)
{
letterGrade[3]++;
}
else if(accepted[i] < 50 && accepted[i] > 0)
{
letterGrade[4]++;
}
}
}
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