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#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;
//Struct definition
struct letterType
{
char letter;
int letterCount;
};
//Function to open I/O files
void openFile(ifstream& inFile, ofstream& outFile);
//Function to fill the array of structs and keep track of the amount of uppercase/lowercase letters
void count(ifstream& inFile, letterType letterList[], int& totalBig, int& totalSmall);
//Function to print the letters, the occurences, and the percentages
void printResult(ofstream& outFile, letterType letterList[], int totalBig, int totalSmall);
//Function to create an output file that contains programmer info
void Info (ofstream& outputFile);
int main()
{
ofstream fout;
ifstream input; //object to read the text
ofstream output; //object to write the results
int totalCapital = 0; //variable to store the total number of uppercase
int totalLower = 0; //variable to store the total number of lowercase
letterType letterObj[52]; //array of structs of type letterType to hold the information
//Input and process data
Info (fout);
openFile(input, output);
count(input, letterObj, totalCapital, totalLower);
printResult(output, letterObj, totalCapital, totalLower);
//Close files
input.close();
output.close();
return 0;
}
void openFile(ifstream& inFile, ofstream& outFile)
{
string inFileName;
string outFileName;
cout << "Enter the name of the input file: ";
cin >> inFileName;
inFile.open(inFileName.c_str());
cout << endl;
cout << "Enter the name of the output file: ";
cin >> outFileName;
outFile.open(outFileName.c_str());
cout << endl;
}
void count(ifstream& inFile, letterType letterList[], int& totalBig, int& totalSmall)
{
char ch;
//Loop to initialize the array of structs; set letterCount to zero
for(int index = 0; index < 26; index++)
{
//This segment sets the uppercase letters
letterList[index].letter = static_cast<char>(65 + index);
letterList[index].letterCount = 0;
//This segment sets the lowercase letters
letterList[index + 26].letter = static_cast<char>(97 + index);
letterList[index + 26].letterCount = 0;
}
//read first character
inFile >> ch;
//Keep reading until end of file is reached
while(!inFile.eof())
{
//If uppercase letter or lowercase letter is found, update data
if('A' <= ch && ch <= 'Z')
{
letterList[static_cast<int>(ch) - 65].letterCount++;
totalBig++;
}
else if('a' <= ch && ch <= 'z')
{
letterList[static_cast<int>(ch) - 71].letterCount++;
totalSmall++;
}
//read the next character
inFile >> ch;
} //end while
} //end function
void printResult(ofstream& outFile, letterType letterList[], int totalBig, int totalSmall)
{
outFile << fixed << showpoint << setprecision(2);
outFile << "Letter Occurences Percentage" << endl;
for(int index = 0; index < 52; index++)
{
if(0 <= index && index <= 25)
{
outFile << setw(4) << letterList[index].letter << setw(12) << letterList[index].letterCount << " ";
outFile << setw(15)<< 100 * (letterList[index].letterCount / (static_cast<float>(totalBig)+static_cast<float>(totalSmall))) << "%" << endl;
}
else
{
outFile << setw(4) << letterList[index].letter << setw(12) << letterList[index].letterCount << " ";
outFile << setw(15) << 100 * (letterList[index].letterCount / (static_cast<float>(totalBig)+static_cast<float>(totalSmall))) << "%" << endl;
}
} //end for
} //end
void Info (ofstream& outputFile)
{
string outputFileName;
cout << "Enter your name: ";
cin >> outputFileName;
outputFileName = outputFileName+"_p4.txt";
outputFile.open(outputFileName.c_str());
outputFile << "Programmer name: ";
outputFile << "\nThis program is a collection of variable declarations";
outputFile << "\nand function calls. This program reads a text and outputs";
outputFile << "\nthe letters, together with their counts, as explained below";
outputFile << "\nin the function printResult.";
outputFile << "\n\nThe program consists of the following four functions:\n";
outputFile << "\n**Function openFile: Opens the input and output files. You must pass the";
outputFile << "\nfile streams as parameters (by reference, of course). If the file does not";
outputFile << "\nexist, the program should print an appropriate message and exit. The";
outputFile << "\nprogram must ask the user for the names of the input and output files.";
outputFile << "\n\n**Function count: counts every occurrence of capital letters A-Z and";
outputFile << "\nsmall letters a-z in the text file opened in the function openFile. This";
outputFile << "\ninformation must go into an array of structures. The array must be passed";
outputFile << "\nas a parameter, and the file identifier must also be passed as a parameter.";
outputFile << "\n\n**Function printResult: Prints the number of capital letters and small";
outputFile << "\nletters, as well as the percentage of capital letters for every letter A-Z and";
outputFile << "\nthe percentage of small letters for every letter a-z. The percentages";
outputFile << "\nshould look like this: ‘‘25%’’. This information must come from an array";
outputFile << "\nof structures, and this array must be passed as a parameter.";
outputFile << "\n\n**Function Info: Creates an output file named 'yourName_P4.txt'";
outputFile << "\nthat contains all your required programmer info, along with";
outputFile << "\nTA name,..) a description of the program ( what it does, and how),";
outputFile << "\nand how you approached solving it. You must include your algorithm that";
outputFile << "\nyou wrote, including the steps and any refinements made.";
outputFile << "\nFor Project 5, create an output file named 'yourName_P5.txt.'";
outputFile << "\n\n\n\n\n";
cout << endl;
}
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