Convert lowercase to uppercase using files.

Write a C++ program to convert lowercase to uppercase using files.

Program Algorithm:

Step 1: Include the header files

Step 2: Declare the variables.

Step 3: Read the file name.

Step 4: open the file to write the contents.

Step 5: writing the file contents up to reach a particular condition.

Step 6: write the file contents as uppercase.

Step 7: open the file to read the contents.

Program Code in C++:

#include<fstream.h>

#include<stdio.h>

#include<ctype.h>

#include<string.h>

#include<iostream.h>

#include<conio.h>

void main()

{

char c,u;

char fname[10];

clrscr();

ofstream out;

cout<<"Enter File Name:";

cin>>fname;

out.open(fname);

cout<<"Enter the text(Enter # at end)\n"; //write contents to file

while((c=getchar())!='#')

{

u=c-32;

out<<u;

}

out.close();

ifstream in(fname); //read the contents of file

cout<<"\n\n\t\tThe File contains\n\n";

while(in.eof()==0)

{

in.get(c);

cout<<c;

}

getch();

}

Program Output:

Enter File Name: welcome.txt

Enter contents to store in file (enter # at end)

oops programming

The File Contains

OOPS PROGRAMMING