Lower Case To Upper Case Conversion in C++

This program that I wrote will show you how to convert lowercase words in a given sentence into uppercase equivalent using C++ as my programming language. The C++ library file that I used to convert lowercase into uppercase is #include <cctype> this library file has a built in function called toupper() that enables the programmer to convert lowercase characters into uppercase characters. I hope you will find my work useful and beneficial in your learning how to program in C++.

Thank you very much.

Sample Output of Our Program

Program Listing

#include <iostream>

#include <cctype>

#include <string>

int main()

{

    using namespace std;

    string str;

   cout << " Lower Case To Upper Case String Conversion 1.0";

   cout << "\n\n";

   cout << "Enter a String : ";

   getline(cin,str);

    for (size_t i = 0; i < str.length(); ++i)

    {

        str[i]=toupper(str[i]);

    }

    cout << "\n";

    cout<<"\n Converted Results in Upper Case : "  <<str << ".";

    for (size_t i = 0; i < str.length(); ++i)

    {

        str[i]=tolower(str[i]);

    }

    cout<<"\n Converted Results in Lower Case : "  <<str << ".";

    cout << "\n\n";

    system("PAUSE");

}

DOWNLOAD FILE HERE