#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;
 
 
void printArray(const int [], int);
 
int main ()
{
	unsigned int strlength;
	int alphabet[26] = {0};
	int charnum = 0;
	char fileName[30];
	char str[26];
	char letter = 'a';
 
 
	cout << "Enter the name of the input file"; // opens file
 
	cin >> fileName;
 
	ifstream infile(fileName);
 
	if ( !infile ) 
	{
		cerr << "Cannot open the input file .\n "; // error occurs if bad file name
 
		return (1);
	}
 
	while ((infile >> str) && (*str != EOF)) // continues until end of file
	{										//counts char without spaces
		string line;
		getline(infile, line);
		int lentemp = line.size();
		charnum += lentemp;
	}
	cout << "The number of char without spaces is " << charnum << endl;
 
 
	while ((infile >> str) && (*str != EOF))//counting the number of each letter
	{ 
		if (97 <= (static_cast<int>(tolower('a'))) <= 122)
 
		alphabet[static_cast<int>('a') - 97]++;
	}		
	printArray(alphabet,  26 ); // prints historgram for frequency of letter
 
 
 
	infile.close ();
 
	for (int i = 1; i <= 26; i++)
	{
		cout << "alpha[ " << i << "] = " << alphabet[i] << endl; 
	}		
	return ( 0 );
 
}
 
void printArray(const int a[], int size) // function for historgram
{
	for (int i= 0; i < size; i++)
	{ 
	if ( i % 20 == 0 )
		cout << endl;
		cout << setw(2) << a[i];
	}
}

while ((infile >> str) && (*str != EOF))//counting the number of each letter
	{ 
	if (97 <= (static_cast<int>(tolower('a'))) <= 122)
 
	alphabet[static_cast<int>('a') - 97]++;
	}