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#include <iostream>
#include <iomanip>
#include <cctype>
#include <math.h>
#include <fstream>
#include <cstdlib>
using std::setiosflags;
using std::resetiosflags;
using std::setw;
using std::setprecision;
using std::ofstream;
using std::cin;
using std::cout;
using namespace std;
using std::fstream;
using std::ios;
int read (char filename[], char names[][30], int scores[][3], double averages[]);
void write (char filename[], ios::openmode mode, char description[],char names[][30],
int scores[][3], double averages[], int numberOfStudents);
void bubbleSortByName (char names[][30], int scores[][3], double averages[],int numberOfStudents);
void bubbleSortByAverage (char names[][30], int scores[][3], double averages[],int numberOfStudents);
int main()
{
char names [100][30];
int scores [100][ 3];
double averages [100];
cout << ':' << setiosflags(ios::left) << setw(30) << "hello, world!"<< resetiosflags (ios::left) << "\n";
cout << setiosflags (ios::fixed|ios::showpoint)<< setw(7) << setprecision(2) << ':' << 3.1415927 << endl;
int numberOfStudents = read ("dataHw.txt", names, scores, averages);
write ("sortHw.txt", ios::out, "Pre-Sorting",names, scores, averages, numberOfStudents);
write ("sortHw.txt", ios::app, "Sorted by Name",names, scores, averages, numberOfStudents);
bubbleSortByName (names, scores, averages, numberOfStudents);
write ("sortHw.txt", ios::app, "Sorted by Average",names, scores, averages, numberOfStudents);
bubbleSortByAverage (names, scores, averages, numberOfStudents);
return 0;
}
int read(char filename[], char names[][30], int scores[][3], double averages[])
{
// initialize scores & averages to 0
for (int i = 0; i < 10; i++)
{
averages[i] = 0;
for (int j = 0; j < 3; j++)
{
scores[i][j] = 0;
}
}
int sum;
int numberOfStudents = 0; // how many students we will have
int col = 0; // column for names
// read text document
ifstream infile(filename); // define & open
for (int i = 0; i < 10; i++)
{
infile >> names[i]; // get the name
sum = 0; // base finding of the average
if (strcmp(names[i], "zzz") != 0)
{
for (int j = 0; j < 3; j++)
{
infile >> scores[i][j]; // start plugging in scores
sum += scores[i][j]; // while we're at it, get the sum of the scores
}
averages[i] = sum / 3.0; // get the average for this name
numberOfStudents = i;
}
}
infile.close(); // close
return numberOfStudents;
}
void write(char filename[], ios::openmode, char description[], char names[][30], int scores[][3], double averages[], int numberOfStudents)
{
// write to text file
ofstream outfile (filename, ios::out); // define
outfile << description << endl;
cout << description << endl;
for (int i = 0; i < numberOfStudents; i++)
{
outfile << names[i] << ' ' << "\n"; // print the name
outfile << fixed << setw(7) << setprecision(2) << averages[i] << ' '<< "\n"; // then the averages
for (int j = 0; j < 4; j++)
{
outfile << scores[i][j] << ' ' << "\n"; // then the three exam scores
}
outfile << endl; // then go to the next line
}
outfile << endl;
outfile.close();
return;
}
void bubbleSortByName (char names[][30], int scores[][3], double averages[],int numberOfStudents)
{
int i = 0;
int compares = 0;
bool swapOccurred;
char temp[80];
do
{
swapOccurred = false;
for (int j=0;j<=numberOfStudents-2-i;j++)// pair = 0 to numberOfstudents-2
{
compares++;
if (strcmp (names[j],names[j+1]) > 0)
{
strcpy (temp,names[j]);
strcpy (names[j], names[j+1]);
strcpy (names[j+1], temp); // swap
swapOccurred = true;
scores[j] and scores[j+1];
}
} // end for
i++;
}
while (swapOccurred);
return;
}
void bubbleSortByAverage (char names[][30], int scores[][3], double averages[],int numberOfStudents)
{
int compares = 0;
bool swapOccurred;
do
{
swapOccurred = false;
for (int i=0; i <= numberOfStudents-2; i++) // sink = 0 to numberOfExams-2
{
for (int j=0;j<=numberOfStudents-2-i;j++)// pair = 0 to numberOfStudents-2
{
compares++;
if (scores[i][j] < scores[i][j+1])
{
int temp = scores[i][j];
scores[i][j] = scores[i][j+1];
scores[i][j+1] = temp; // swap
swapOccurred = true;
scores[i][j] and scores[i][j+1];
}
} // end for
i++;
}
}
while (swapOccurred);
return;
}
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