Help please. I wrote a code, but is such a mess I have to start from scratch. If

Question

Help please. I wrote a code, but is such a mess I have to start from scratch. If you are able to put together a working code maybe I can see where I am messing up.

use VOID functions:

Write a code that will prompt the user for an input file, prompt the user for an output file name, process the input file and output your results to an output file.

your output file should look like this:

* Name:  YOUR NEAME GOES HERE
* Input File Name : p3in1.txt
* Output File Name: outPut_p3in1.txt
* Number of lines = 7
* Number of chars = 269
* Five Most Used Characters
'E' 33 counted
'N' 26 counted
'T' 25 counted
'A' 24 counted
'R' 21 counted
* Characters Not Used:   J, Q, Z,
________________________________________
Character Occurence
- - - - - - - - - - - -
A count = 24   B count =   2     C count =   5
D count =   8   E count = 33    F count =   7
G count =   4   H count = 10    I count = 19
J count =   0      K count =   2      L count = 18
M count =   6     N count = 26      O count = 18
P count =   5     Q count =   0      R count = 21
S count = 11    T count = 25     U count = 13
V count =   1    W count =   2       X count =   2
Y count =   7   Z count =   0

****** input file example: *********

NOTE: The file must have a line return after the last character, in order for our example code to run properly. If you don’t have that blank line at the end of the input file, the program will not perform as intended and behave unpredictably.

---------------Input.txt begins---------------

9 8 7 6 5 You must have a line return after the

last character in your message, in order

for our example code to run properly. Note

that there are 8 lines of text in this file

including an additional mandatory "blank line"...otherwise

your system may hang up and create huge output files

the intentional line return and final blank line follows

Explanation / Answer

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

using namespace std;

void updateCounts(int counts[], string line){
   int ind = 0;
   char ch;
   for(int i = 0; i < line.size(); ++i){
       ch = line[i];
       if(ch >= 'a' && ch <= 'z')
           ch -= 32;
       if(ch >= 'A' && ch <= 'Z'){
           ind = ch - 'A';
           ++counts[i];
       }
   }
}

void printHeader(ofstream &out, string name, string inFile, string outFile){
   out << "* Name: " << name << endl;
   out << "* Input File Name : " << inFile << endl;
   out << "* Output File Name: " << outFile << endl;
}

void printStats(ofstream &out, int counts[], int numChars, int numLines){
   out << "* Number of lines = " << numLines << endl;
   out << "* Number of chars = " << numChars << endl;
   out << "* Five Most Used Characters" << endl;
   out << "* Characters Not Used:   " << endl;
   for(int i = 0; i < 26; ++i){
       if(counts[i] == 0)
           out << (char)('A' + i) << " ";
   }
   out << endl;
}

void printResult(ofstream &out, int counts[]){
   out << "________________________________________" << endl;
   out << "Character Occurence" << endl;
   out << "- - - - - - - - - - - -" << endl;
   for(int i = 0; i < 26; ++i){
       cout << (char)('A' + i) << " count = " << counts[i] << " ";
       if((i + 1) % 3 == 0)
           cout << endl;
   }
}

int main(){
   string fileName, line, inFile;
   int counts[26], numChars = 0, numLines = 0;
   cout << "Enter input file name: ";
   cin >> fileName;
   inFile = fileName;
   ifstream in(fileName.c_str());
   if(in.is_open()){
       cout << "Enter output file name: ";
       cin >> fileName;
       ofstream out(fileName.c_str());
       for(int i = 0; i < 26; ++i){
           counts[i] = 0;
       }
       while(getline(in, line)){
           updateCounts(counts, line);
           numChars += line.size() + 1;
           ++numLines;
       }
       printHeader(out, "NAME", inFile, fileName);
       printStats(out, counts, numChars, numLines);
       printResult(out, counts);
       in.close();
       out.close();
   }
   else{
       cout << "can not open " << fileName << " to read" << endl;
   }
   return 0;
}

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