Thread: Encoding and coding text.

I have to write a program like this, but i'm not that good. Please someone help me

Created file in notepad, to open and read and to make statistic for letter number(how many lettes), numbers and punctuation marks, control marks and empty spaces.

The text in the file should be encoded by the rule: encoding and decoding to be done with two diferent functions.
Key of coding: in the text to encode only the letters from the alphabet and the numbers. Every letter in the string, which is odd position to be replaced with the letter who is two places after the replacing letter in the alphabet. The last letters Y,Z to be replaced with A,B consequently. Steam letters in the string do not suffer any changes.
Odd letters numbers to be replaced with steam numbers who are their followers and odd numbers to be replaced with their steam predecessors. 9 to encode 0 and 0 with 9.
Control marks and punctuation marks do not suffer any changes.
Treated like this file to be saved under a different name and be called decode.

im not that good to write this code, i need help

No One is going to write this for you. He checks into the forum on Thursdays. Usually.

Meantime, why not try the parts you DO understand? You know, just in case.

Create the notepad file.
Then write some 'c' that opens it
Then make your 'c' read some of it in.
Then read all of it in.
Then open a new file and write to it.

Step by step.

i'll try..
when i stuck on something i'll post here

Originally Posted by dzadze

i'll try..
when i stuck on something i'll post here

Exactly. Be sure you post it in CODE tags (read the forum FAQ) and make sure it's compilable (complete) - not just random snippets.

here's something i've made, but how to make statistic how many letters and numbers are the file ?

Code:

#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <fstream>
#include <string>

using namespace std;
int main(){
ifstream in;
string x;
int i, b=0;
in.open("C:\\test.txt");
while(getline(in,x))
cout<<x<<endl;
cout<<endl;
for(i=0;i<in.length();i++){
if(in.at(int(i))>=65 && in.at(int(i))<=90 && in.at(int(i)>=97 && in.at(int(i)<=122)
b++;
                             }
cout<<"The file has"<<b<<"letters"<<endl;
vlez.close();
system ("PAUSE");
return EXIT_SUCCESS;
}

i am stuck.. do u know how to count the numbers and the letters from the file ?

Originally Posted by quzah

That's C++, not C. I'm not sure what you mean by making them static; even static variables are going to be destroyed when the program ends.
Quzah.

Clean your glasses son! He said "statistic" ... not "static".

Originally Posted by quzah

Good catch, but I'm not sure that makes any more sense.
Quzah.

Oh you know... count characters, words, digits, spaces, lines, cows in the field across the road... that sort of thing.

Originally Posted by dzadze

here's something i've made, but how to make statistic how many letters and numbers are the file ?

Code:

#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <fstream>
#include <string>

using namespace std;
int main(){
ifstream in;
string x;
int i, b=0;
in.open("C:\\test.txt");
while(getline(in,x))
cout<<x<<endl;
cout<<endl;
for(i=0;i<in.length();i++){
if(in.at(int(i))>=65 && in.at(int(i))<=90 && in.at(int(i)>=97 && in.at(int(i)<=122)
b++;
                             }
cout<<"The file has"<<b<<"letters"<<endl;
vlez.close();
system ("PAUSE");
return EXIT_SUCCESS;
}

Your indentation is crap. You didn't even make an effort. Your parentheses don't even match on your if statement. You'll never get statistics (or statics) working if you can't even compile a simple program to read a file. God only knows what vlez is. And, as Quzah pointed out, you're doing C++, not C. I'm not sure you really want to pass this class, or that you really want our help.

i am a total noob,
vlez=in, forgot to change that