Question

In Programming Challenge 12 of Chapter 3, you were asked to write a program that converts a Celsius temperature to Fahrenheit. Modify that program so it uses a loop to display a table of the Celsius temperatures 0–20, and their Fahrenheit equivalents. Display table on screen and it a .txt file.

c++

Answer 1

Code:

#include <iostream>
#include<iomanip>
#include<fstream>
using namespace std;
int main()
{
    int Celsius=0;
    fstream file;
    // creating and opening a text file
    file.open("a.txt",ios::out);
    // if file is not created then show error 
    if(!file){
        cout<<"Error"<<endl;
        exit(1);
    }
    cout<<"Celsius"<<setw(15)<<"fahrenheit"<<endl;
    // Writing to the file
    file<<"Celsius"<<setw(15)<<"fahrenheit"<<endl;
    for(Celsius=0;Celsius<=20;Celsius++){
        // Converting Celsius to fahrenheit
        float fahrenheit=(Celsius*9.0)/5.0+32;
        std::cout << Celsius<<setw(15)<<fahrenheit << std::endl;
        // Writing to text file
        file<<Celsius<<setw(15)<<fahrenheit<<endl;
    }
    // Closing the file
    file.close();
    return 0;
}

Screenshot of the code:

Screenshot of the output:

a.txt file :