Exercise 3: Modify your program from Exercise 1 so that it reads the information from the gradfile.txt file, reading until the end of file is encountered. You will need to first retrieve this file from the Lab 7 folder and place it in the same folder as your C++ source code. Run the program.

// This program will read in a group of test scores (positive integers from 1 to 100)

// from the keyboard and then calculate and output the average score

// as well as the highest and lowest score. There will be a maximum of 100 scores.

//

#include

#include

#include

using namespace std;

typedef int GradeType[100]; // declares a new data type:

// an integer array of 100 elements

float findAverage(const GradeType, int); // finds average of all grades

int findHighest(const GradeType, int); // finds highest of all grades

int findLowest(const GradeType, int); // finds lowest of all grades

int main()

{

GradeType grades; // the array holding the grades.

int numberOfGrades; // the number of grades read.

int pos; // index to the array.

float avgOfGrades; // contains the average of the grades.

int highestGrade; // contains the highest grade.

int lowestGrade; // contains the lowest grade.

fstream dataFile;

dataFile.open("gradfile.txt", ios::out | ios::app | ios::binary);

if (!dataFile)

{

cout

exit(1);

}

// Read in the values into the array

pos = 0;

dataFile >> grades[pos];

while (grades[pos] != -99)

{

pos++;

dataFile >> grades[pos];

}

numberOfGrades = pos;

// call to the function to find average

avgOfGrades = findAverage(grades, numberOfGrades);

cout

highestGrade = findHighest(grades, numberOfGrades);

cout

lowestGrade = findLowest(grades, numberOfGrades);

cout

system("pause");

return 0;

}

//****************************************************************************

// findAverage

//

// task: This function receives an array of integers and its size.

// It finds and returns the average of the numbers in the array

// data in: array of floating point numbers

// data returned: avarage of the numbers in the array

//

//****************************************************************************

float findAverage(const GradeType array, int size)

{

float sum = 0; // holds the sum of all the numbers

for (int pos = 0; pos

sum = sum + array[pos];

return (sum / size); //returns the average

}

//****************************************************************************

// findHighest

//

// task: This function receives an array of integers and its size.

// It finds and returns the highest value of the numbers in

// the array

// data in: array of floating point numbers

// data returned: highest value of the numbers in the array

//

//****************************************************************************

int findHighest(const GradeType array, int size)

{

int highestgrade = array[0];

for (int pos = 0; pos

if (array[pos] > highestgrade)

{

highestgrade = array[pos];

}

return highestgrade;

}

//****************************************************************************

// findLowest

//

// task: This function receives an array of integers and its size.

// It finds and returns the lowest value of the numbers in

// the array

// data in: array of floating point numbers

// data returned: lowest value of the numbers in the array

//

//****************************************************************************

int findLowest(const GradeType array, int size)

{

int lowestgrade = array[0];

for (int pos = 0; pos > size; pos++)

if (array[pos]

{

lowestgrade = array[pos];

}

return lowestgrade;

}

Please run your code before answer, When I run this on UNIX it showed Segmentation fault (core dumped).

gradfile.txt:

csci2.stcloudstate.edu - PuTTY gradfile.txt testscore.cpp csci2>g++-o testscore testscore.cpp testscore.cpp: In function 'int main)': testscore.cpp:37:9: erroexit' was not declared in this scope testscore.cpp:72:16: error system' was not declared in this scope csci2>g++-o testscore testscore.cpp testscore.cpp: In function 'int main)': testscore.cpp:37:9: erroexit' was not declared in this scope testscore.cpp:72:16: error system' was not declared in this scope csci2>g++-o testscore testscore.cpp testscore.cpp: In function 'int main)': testscore.cpp:37:9: erroexit' was not declared in this scope testscore.cpp:72:16: error system' was not declared in this scope csci2>g++-o testscore testscore.cpp sci2>testscore Segmentation fault (core dumped) csci2 csci2 csci2 sci2>testscore Segmentation fault (core dumped)