C and C++ program Program to convert the lowercase letter into uppercase and to increment an integer

# include "iostream.h"
# include "conio.h"
char convert(char ch)
{
 return(ch -32);
}
int increment(int n)
{
 return(++n);
}
void main()
{
 int num;
 char ch1;
 clrscr();
 cout<< "Enter a character in lower case ";
 cin >> ch1;
 cout << "Enter an integer ";
 cin >> num;
 cout<< "\nUpper Case Aplhabet is => " << convert(ch1);
 cout<< "\nIncremented Integer is => " << increment(num);
}

Source:   http://www.learncandcpp.com/2012/02/c-program-from-file-handling-copy-text.html