Question

1. create a .txt file and call it fruits.txt, add the following items to the file

Apple

Banana

Peach

Strawberry

Watermelon

Kiwi

Grape

_______

2. Write a program that does the following:

- Reads the fruit.txt

- Converts the contents into all uppercase

- Writes the uppercased values into a text file called "UpperFruit.txt"

OUTPUT SHOULD BE:

APPLE

BANANA

PEACH

STRAWBERRY

WATERMELON

KIWI

GRAPE

Answer 1

Hi,

Hope you are doing fine. I have coded the above question in C++ keeping all the conditions in mind. The explanation of the code has been clearly provided using comments that have been highlighted in bold. Note that I have also printed the output in console. You may avoid it as per your requirement.

Program:

#include <iostream>
#include <fstream>
#include <algorithm>

using namespace std;

int main()
{
   //fruit is a string that stores each line of the fruits.txt file
   string fruit;
   //upper is an array of string that stores the entire contents of file.
   string upper[100];
   //count is used to count the number of lines in fruits.txt
   int count=0;
   //opening fruits.txt in read mode
   ifstream myfile("fruits.txt");
   //reading each line of file
   while (getline (myfile, fruit)) {
   //storing each line in each index of upper
   upper[count]=fruit;
   //increasing count
   count++;
   }
   //closing file
   myfile.close();
   //converting words in upper to upercase
   for(int i=0;i<count;i++)
   {
       //transform is used along with toupper to convert a string to uppercase
       transform(upper[i].begin(), upper[i].end(), upper[i].begin(), ::toupper);
   }
   //opening file UpperFruit.txt in write mode
   ofstream myfile2("UpperFruit.txt");
   //reading contents of upper
   for(int i=0;i<count;i++)
   {
   //printing output to console
   cout <<upper[i]<<"\n";
   //writing contents to UpperFruit.txt
   myfile2 <<upper[i]<<"\n";
   }
   //closing file
   myfile2.close();
}

fruits.txt

Executable code snippet:

Console output:

Output in file UpperFruit.txt: