# include <iostream>
# include <string>
using namespace std;
 
int main()
{
 tepedef string* sentence;
 
 sentence a;
 
 a= new string[100];
 
 cout<<"Please enter one sentence.";
 
 getline(cin,a);
 
 
 
 
 
 
 
 delete [] a;
 
return 0;
}

#include <iostream>
#include <string>
 
using namespace std;
 
//makes uppercase to lowercase
void makeLower(string &in, int index)
{
	if( in[index] >= 'A' && in[index] <= 'Z' )
		in[index] += 'a' - 'A';
}
//makes lowercase to uppercase
void makeUpper(string &in, int index)
{
	if( in[index] >= 'a' && in[index] <= 'z' )
		in[index] += 'A' - 'a';
}
 
//makes 2 or more spaces into 1
void checkSpaces(string &in)
{
	for( int i = 0; i < in.length(); i++ )
		if( in[i] == ' ' && in[i+1] == ' ' && i != in.length()-1)
		{
			in.erase(i,1);
			i--;
		}
}
 
//checks the string and does the above functions
void check(string &in)
{
	checkSpaces(in);
	bool peroid = true;
	for( int i = 0; i < in.length(); i++ )
	{
		if( (in[i] >= 'a' && in[i] <= 'z') || (in[i] >= 'A' && in[i] <= 'Z') )
		{
			if( peroid )
			{
				makeUpper(in, i);
				peroid = false;
			}
			else
				makeLower(in, i);
		}
		if( in[i] == '.' )
			peroid = true;
	}	
}
 
int main()
{
	/*
	you can use a char array for getting user input so
	it limits it to 100 characters and then convert that
	to a string for checking
	*/
	string in;
	getline(cin, in);
	check(in);
	cout << in << endl;
 
	system("PAUSE"); //don't think you need this for VC++ but I need it for dev-C++
	return 0;
}