Encryption

[4i67ko23]

Still errors that those lines:

#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>

#define ENCRYPT "123456789 - abcdefg"

using std :: cout;
using std :: endl;
void encrypt( char [ ] ); // prototypes of functions used in the code
void decrypt( char * ePtr );
using namespace std;
int main( )
{
    string line;
    ifstream read_input ("text.txt");
    if (read_input.is_open())
    {
        while ( read_input.good() )
        {
            getline (read_input,line);  //input is already read into variable "line"
            cout << "Original string is: " << line << endl;
            encrypt( line.c_str() );
            // call to the function encrypt( )
            cout << "Encrypted string is: " << line << endl;
            ofstream encode;
            encode.open ("encoded.txt");
            encode << line;
            encode.close();
            decrypt( line.c_str() );
            // call to the function decrypt( )
            cout << "Decrypted string is: " << line << endl;
            ofstream decode;
            decode.open ("decoded.txt");
            decode << line;
            decode.close();
        }
        read_input.close();
    }
    else cout << "Unable to open file"; 
    Sleep(10000);
    return 0;
}// main

//encrypt data
void encrypt (char e[] ) 
{
    for( int i=0; e[i] != '\0'; ++i ) ++e[i];
} // encrypt

//decrypt data
void decrypt( char * ePtr ) 
{
    for( ; * ePtr != '\0'; ++ ePtr ) --(* ePtr);
}

23 C:\Users\Mathijs\Documents\C++\encrypter.cpp invalid conversion from `const char*' to `char*'

23 C:\Users\Mathijs\Documents\C++\encrypter.cpp initializing argument 1 of `void encrypt(char*)'

30 C:\Users\Mathijs\Documents\C++\encrypter.cpp invalid conversion from `const char*' to `char*'

30 C:\Users\Mathijs\Documents\C++\encrypter.cpp initializing argument 1 of `void decrypt(char*)'

[Dash]

Try this:

char myChar[100];
strncpy(myChar, line.c_str(), line.size());
encrypt(myChar);

[4i67ko23]

Allride!
It works, no errors. It only doesn't encryp.

#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>

#define ENCRYPT "123456789 - abcdefg"

using std :: cout;
using std :: endl;
void encrypt( char [ ] ); // prototypes of functions used in the code
void decrypt( char * ePtr );
using namespace std;
int main( )
{
    string line;
    ifstream read_input ("text.txt");
    if (read_input.is_open())
    {
        while ( read_input.good() )
        {
            getline (read_input,line);  //input is already read into variable "line"
            cout << "Original string is: " << line << endl;
            //encrypt( line.c_str() );
            char myChar[100];
            strncpy(myChar, line.c_str(), line.size());
            encrypt(myChar);
            // call to the function encrypt( )
            cout << "Encrypted string is: " << line << endl;
            ofstream encode;
            encode.open ("encoded.txt");
            encode << line;
            encode.close();
            //decrypt( line.c_str() );
            char myChar2[100];
            strncpy(myChar2, line.c_str(), line.size());
            decrypt(myChar2);
            // call to the function decrypt( )
            cout << "Decrypted string is: " << line << endl;
            ofstream decode;
            decode.open ("decoded.txt");
            decode << line;
            decode.close();
        }
        read_input.close();
    }
    else cout << "Unable to open file"; 
    Sleep(10000);
    return 0;
}// main

//encrypt data
void encrypt (char e[] ) 
{
    for( int i=0; e[i] != '\0'; ++i ) ++e[i];
} // encrypt

//decrypt data
void decrypt( char * ePtr ) 
{
    for( ; * ePtr != '\0'; ++ ePtr ) --(* ePtr);
}

text.txt Hello There!

encoded.txt Hello There!

decoded.txt Hello There!

[Dash]

Replace :
cout << "Encrypted string is: " << line << endl;

with :
cout << "Encrypted string is: " << myChar << endl;

and replace:
encode << line;

with:
encode << myChar;

[4i67ko23]

Great!!
The code finaly works!
Thanks all!
Here is the final source, I'm gone add some extras

#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>

#define ENCRYPT "123456789 - abcdefg"

using std :: cout;
using std :: endl;
void encrypt( char [ ] ); // prototypes of functions used in the code
void decrypt( char * ePtr );
using namespace std;
int main( )
{
    string line;
    ifstream read_input ("text.txt");
    if (read_input.is_open())
    {
        while ( read_input.good() )
        {
            getline (read_input,line);
            cout << "Original string is: " << line << endl;
            //encrypt( line.c_str() );
            char myChar[100];
            strncpy(myChar, line.c_str(), line.size());
            encrypt(myChar);
            // call to the function encrypt( )
            cout << "Encrypted string is: " << myChar << endl;
            ofstream encode;
            encode.open ("encoded.txt");
            encode << myChar;
            encode.close();
            //decrypt( line.c_str() );
            decrypt(myChar);
            // call to the function decrypt( )
            cout << "Decrypted string is: " << myChar << endl;
            ofstream decode;
            decode.open ("decoded.txt");
            decode << myChar;
            decode.close();
        }
        read_input.close();
    }
    else cout << "Unable to open file"; 
    Sleep(10000);
    return 0;
}// main

//encrypt data
void encrypt (char e[] ) 
{
    for( int i=0; e[i] != '\0'; ++i ) ++e[i];
} // encrypt

//decrypt data
void decrypt( char * ePtr ) 
{
    for( ; * ePtr != '\0'; ++ ePtr ) --(* ePtr);
}