#include <iostream> 
#include <fstream> 
#include <string> 
 
using namespace std; 
 
struct letters 
{ 
char ch; 
int lcount; 
}; 
 
 
void main() 
{ 
void Explanation(); 
int OpenFile(ifstream&, ofstream&); 
int Count(ifstream&, letters[], int); 
void PrintResult(letters[], int); 
 
const int Size = 52; 
letters List; 
 
ifstream infile; 
ofstream outfile; 
 
Explanation(); 
OpenFile(infile, outfile); 
Initialize(List, Size); 
Count(infile, List, Size); 
PrintResult(List, Size); 
 
} 
 
void Explanation() 
{ 
cout << "This program reads a text from a file declared by you the user." << endl; 
cout << "If the file does not exist a message will state this and the program\n" 
<< "will be terminated." << endl << endl; 
cout << "If the file opens with success the program will read the text and then\n" 
<< "output the letters in that file, both upper and lower case and the count\n" 
<< "of each letters appearance in the file." << endl << endl; 
cout << "The program will then print the total number as well as the percentages of\n" 
<< "capital letters for every letter A-Z and small letters for every letter a-z\n" 
<< "to the output file also declared by you the user." << endl << endl << endl; 
} 
 
int OpenFile(ifstream& infile, ofstream& outfile) 
{ 
string inputfile; 
string outputfile; 
 
cout << "Please enter the name for the input file: "; 
cin >> inputfile; 
cout << endl; 
 
infile.open(inputfile.c_str()); 
 
if (!infile) 
{ 
cout << "Cannot open the input file!" << endl; 
return 1; 
} 
 
cout << "Now enter the name for the output file: "; 
cin >> outputfile; 
cout << endl; 
 
outfile.open(outputfile.c_str()); 
}