#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;

const size_t MAX_LETTERS = 26;

void InitArray(int ary[]);
void CountLetters( int letterCount[], string filename);
void PrintLetters(int letterCount[]);

int main() {
     int letterCount[MAX_LETTERS]{};
    
     InitArray(letterCount);

     CountLetters(letterCount, "message.txt");
     PrintLetters(letterCount);


     return 0;
}

void InitArray(int ary[]){
    size_t i;

    for(i=0;i<MAX_LETTERS; i++) {
       ary[i] = 0;
    }

    return;
}

void PrintLetters(int letterCount[]){
    size_t i;
    char c;
    
    for( i = 0;  i < MAX_LETTERS; i++) {
       c = 'a'+i;
       cout << c << setw(8) << letterCount[i] << endl;
    }
}

void CountLetters( int letterCount[], string filename){
   ifstream inFile;
   inFile.open(filename);
   char c;
   size_t pos;

   inFile >> c;
   while(inFile) {
       if(isalpha(c)) {
           pos = tolower(c) - 'a';
           //cout << "Changing the array at " << c 
           //     << " or "  << static_cast<int>(pos) << endl;
           letterCount[pos]++;
       }

       inFile >> c;
   }

   inFile.close();
   return;
}