Answer to Question #209238 in C++ for ASAP

Question

Topic: Files and Streams

Codes discussed will be posted here. Write your conclusion

File name: "Ch3_AverageTestScore.cpp"

Code: 

*Note: use the link below to view the codes

https://drive.google.com/file/d/1uAjKcK31OpCM8RuSuWelUg_mHDZo-9-V/view?usp=sharing

Answer 1

//************************************************************
// Author: D.S. Malik
//
// Program to calculate the average test score.
// Given a student's name and five test scores, this program
// calculates the average test score. The student's name, the
// five test scores, and the average test score is stored in
// the file testavg.out. The data is input from the file
// test.txt.
//************************************************************
#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>
using namespace std;
int main()
{
	//Declare variables; Step 1
	ifstream inFile; //input file stream variable
	ofstream outFile; //output file stream variable
	double test1, test2, test3, test4, test5;
	double average;
	string firstName;
	string lastName;
	inFile.open("test.txt"); //Step 2
	outFile.open("testavg.out"); //Step 3
	outFile << fixed << showpoint; //Step 4
	outFile << setprecision(2); //Step 4
	cout << "Processing data" << endl;
	inFile >> firstName >> lastName; //Step 5
	outFile << "Student name: " << firstName
		<< " " << lastName << endl; //Step 6


	inFile >> test1 >> test2 >> test3
		>> test4 >> test5; //Step 7
	outFile << "Test scores: " << setw(6) << test1
		<< setw(6) << test2 << setw(6) << test3
		<< setw(6) << test4 << setw(6) << test5
		<< endl; //Step 8
	average = (test1 + test2 + test3 + test4
		+ test5) / 5.0; //Step 9
	outFile << "Average test score: " << setw(6)
		<< average << endl; //Step 10
	inFile.close(); //Step 11
	outFile.close(); //Step 11
	return 0;
}
Conclusion:


The program is used the header file <fstream> to read and write information about student. This library stores both output Stream and input Stream. 
Input stream variable "inFile" allows to read data from the file and output file stream variable "outFile" allows to saves data to the file.
The code "inFile.open("test.txt");" opens the input file "test.txt". The code "outFile.open("testavg.out");"  opens the output file "testavg.out".
To close the input and output files the prgoram is used this code: inFile.close(); outFile.close();