Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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In
(data.txt)
Johnson 85 83 77 91 76
Cooper 78 81 11 90 73
Gupta 92 83 30 69 87
Blair 23 45 96 38 59
Clark 60 85 45 39 67
Kennedy 77 31 52 74 83
Bronson 93 94 89 77 97
Sunny 79 85 28 93 82
Smith 85 72 49 75 63
Aniston 80 90 95 93 48
(Program to Improve)
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;
void getData(ifstream& inf, string n[], double tstData[][6], int count);
void calculateAverage(double tstData[][6], int count);
void calculateGrade(double tstData[][6], char gr[], int count);
void print(string n[], double tstData[][6], char gr[], int count);
int main()
{
string names[10];
double testData[10][6];
char grade[10];
ifstream inFile;
inFile.open("data.txt");
if (!inFile)
{
cout << "Cannot open the input file: ch8_Ex13Data.txt." << endl;
cout << "Program terminates!" << endl;
return 1;
}
cout << fixed << showpoint << setprecision(2);
getData(inFile, names, testData, 10);
calculateAverage(testData, 10);
calculateGrade(testData, grade, 10);
print(names, testData, grade, 10);
inFile.close();
return 0;
}
void getData(ifstream& inf, string n[], double tstData[][6], int count)
{
for (int i = 0; i < count; i++)
{
inf >> n[i];
for (int j = 0; j < 5; j++)
inf >> tstData[i][j];
tstData[i][5] = 0.0;
}
}
void calculateAverage(double tstData[][6], int count)
{
double sum;
for (int i = 0; i < count; i++)
{
sum = 0.0;
for (int j = 0; j < 5; j++)
sum = sum + tstData[i][j];
tstData[i][5] = sum / 5;
}
}
void calculateGrade(double tstData[][6], char gr[], int count)
{
for (int i = 0; i < count; i++)
if (tstData[i][5] >= 90)
gr[i] = 'A';
else if (tstData[i][5] >= 80)
gr[i] = 'B';
else if (tstData[i][5] >= 70)
gr[i] = 'C';
else if (tstData[i][5] >= 60)
gr[i] = 'D';
else
gr[i] = 'F';
}
void print(string n[], double tstData[][6], char gr[], int count)
{
double sum = 0.0;
cout << left << setw(10) << "Name"
<< right << setw(8) << "Test 1"
<< setw(8) << "Test 2"
<< setw(8) << "Test 3"
<< setw(8) << "Test 4"
<< setw(8) << "Test 5"
<< setw(10) << "Average"
<< setw(8) << "Grade" << endl;
for (int i = 0; i < count; i++)
{
cout << left << setw(10) << n[i];
cout << right;
for (int j = 0; j < 5; j++)
cout << setw(8) << tstData[i][j];
cout << setw(10) << tstData[i][5]
<< setw(6) << gr[i] << endl;
sum = sum + tstData[i][5];
}
cout << endl << endl;
cout << "Class average: " << sum / count << endl;
}
The Output must match all data below, say for the exception that it must be sorted. The last answer I received was less than satisfactory.
Transcribed Image Text:Name
Test 1 Test 2 Test 3 Test 4 Test 5
Average
Grade
Johnson
85.00
83.00
77.00
91.00
76.00
82.40
Сооper
Gupta
78.00
81.00
11.00
90.00
73.00
66.60
92.00
83.00
30.00
69.00
87.00
72.20
Blair
23.00
45.00
96.00
38.00
59.00
52.20
F
Clark
60.00
85.00
45.00
39.00
67.00
59.20
F
Kennedy
77.00
31.00
52.00
74.00
83.00
63.40
Bronson
93.00
94.00
89.00
77.00
97.00
90.00
A
Sunny
79.00
85.00
28.00
93.00
82.00
73.40
C
Smith
85.00
72.00
49.00
75.00
63.00
68.80
Aniston
80.00
90.00
95.00
93.00
48.00
81.20
Class average: 70.94
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