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#include <iostream>
#include <string>
#include <fstream>
#include <vector>
using namespace std;
// Prototypes
void function_1();
void function_2();
void function_3();
char load_data();
int main (){
bool quit = false;
while(quit == false) {
cout << "\n"
"1) Function 1\n"
"2) Function 2\n"
"3) Function 3\n"
"q) Quit\n"
"Select a Menu Option :";
char selection;
cin >> selection;
switch(selection){
case '1': function_1(); break;
case '2': function_2(); break;
case '3': function_3(); break;
case 'q': quit = true; break;
default : cout << "\n" << "try again" << "\n";
}
}
return 0;
}
void function_1(){
cout << "This is Function 1, calling load_data()" << endl;
load_data();
}
void function_2(){
int number;
cout << "This is Function 2" << endl;
}
void function_3(){
cout << "This is Function 3" << endl;
}
char load_data(){
char filename[20];
ifstream data_in;
vector<string> words;
string word;
string data_conc;
string data_alpha;
cout << "Filename: " ;
cin.ignore();
cin.getline (filename,20); // get the filename from the user
data_in.open (filename); //open the file
if(!data_in.is_open()){ // check to make sure it's open
cout << "\n" << "Error opening file." << "\n" << endl;
exit(0); // if not open, exit
}
else{
cout << "\n" << "File read success." << "\n" << endl;
}
while(data_in >> word) // until we reach the end
words.push_back(word); // push the file into memory word by word
for(int i = 0; i < words.size(); i++){ // until we reach the end
data_conc += words[i]; // clear out the whitespace
}
int i = 0;
for (i = 0; data_conc[i]; i++){ // until we reach the end
if(isalpha(data_conc[i])){ // check to see if char is alpha
data_conc[i] = toupper(data_conc[i]); // if it is convert to upper
data_alpha += data_conc[i]; // and put it in a new string
}
}
/*----------------------------------------------------------------------------*/
// Calculate Key Length
int k=1;
int num_shifts=26;
float index=0;
int key_len;
for(k = 1; k < num_shifts; k++){
int l = 0;
int shift=k;
float matches=0;
for(l = 0; data_alpha[l + shift]; l++){
if(data_alpha[l] == data_alpha[l + shift]){
matches++;
}
}
index=(100 * matches / l);
if (index >= 6) {break;}
}
key_len=k;
cout << "Probable Key Length: " << key_len << endl;
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
// Calculate Key Characters
/*
float en_std_dist[] = {8.12, 1.49, 2.71, 4.32, 12.02, 2.30, 2.03, 5.92, 7.31,
0.10, 0.69, 3.98, 2.61, 6.95, 7.68, 1.82, 0.11, 6.02, 6.28, 9.10, 2.88, 1.11,
2.09, 0.17, 2.11, 0.07};
int key_pos;
float char_dev;
int z=0;
for(z = 0; z < 26; z++) {
}
*/
return 0;
}
/* The standard distribution of french letters. */
float fr_std_dist[] = {};
/* The standard distribution of german letters. */
float gr_std_dist[] = {};
/* The standard distribution of italian letters. */
float it_std_dist[] = {};
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