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// Average of test scores
//Gaddis 7th edition number 3
//Libraries
#include <iostream>
#include <iomanip>
using namespace std;
//Function prototypes
void sort(float *, int);
void sortAry(int *, int);
void minPos(int *,int ,int);
void swap(int *, int*);
//Eecution begins here
int main()
{
//Declare variables
int *testScores,
total = 0;
float average;
int numTest,
const count=0;
//Input
cout << "How many test scores are you entering? ";
cin >> numTest;
//Allocte array
testScores = new int[numTest];
cout << "Enter the test scores below.\n";
for (int count = 0; count < numTest; count++)
{
cout << "Test Score " << ": ";
cin >> *(testScores + count);
if(*(testScores + count)<0)
{
cout << "Test score cannot be negative, please try again" << endl;
count --;
}
}
cout << endl;
//Adding the test Scores
total=0;
for (int count = 0; count < numTest; count++)
{
total += *(testScores+count);
}
//Calculate the average test scores
average = total / numTest;
cout << "The average of all the test scores is " << setprecision(2) <<
fixed << average << endl;
cout << endl;
//Display the Test Scores in ascending order
cout << "The test scores in ascending order are: ";
sortAry(testScores, numTest);
for(int i=0; i<numTest; i++)
{
cout << *(testScores+i) << " ";
}
cout << endl;
cout << endl;
cout << "After dropping your lowest grade which was "
<< *testScores << ", Your average is now: ";
for (int i = 1; i < numTest; i++)
{
total += *(testScores+i);
}
float average2=0;
//Calculate the average test scores
average2 = total / numTest;
cout << average2 << "%" << endl << endl;;
delete [] testScores;
testScores = 0;
system("PAUSE");
return 0;
}
//Sort the array
void sortAry(int *testScores,int n){
for(int i=0;i<n-1;i++){
minPos(testScores,n,i);
}
}
void minPos(int *testScores,int n,int pos){
for(int i=pos+1;i<n;i++){
if(*(testScores+pos)>*(testScores+i))
swap(testScores+pos,testScores+i);
}
}
void swap(int *a,int *b)
{
//Swap in place
*a=*a^*b;
*b=*a^*b;
*a=*a^*b;
}
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