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Old 10-16-09   #1 (permalink)
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Default Complete c++ decode program
Code:
#include <iostream>
#include <iomanip>
#include <ctype.h>
using namespace std;
char revCaesar(char);
char convPunct(char);
char convDigit(char);
char convRest (char);
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 revCaesar(ch);
                }
          else if (ispunct(ch))
                {
                 convPunct(ch);
                }
          else if (isdigit(ch))
                {
                 convDigit(ch);
                }
          else 
                 convRest(ch);
                
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
//Function 1 - undoes the Caesar Cipher
char revCaesar(char ch)
{
     if(isupper(ch))
            
           {
            if(ch <= 'D' and ch >= 'Z')
                  {
                   int ch;
                   ch = ch - 3;
                   return ch;
                  }
            else
                
                switch(ch)
                            {
                            case 'A':
                            ch = 'X';
                            break;
                            case 'B':
                            ch = 'Y';
                            break;
                            case 'C':
                            ch = 'Z';
                            break;
                            }
            return ch;
           }
     else
           {
            if(ch <= 'd' or ch >= 'z')
                  {
                   int ch;
                   ch = ch - 3;
                   return ch;
                  }
            else
                  {
                  char s;
                  switch(ch)
                            {
                            case 'a':
                            s = 'x';
                            break;
                            case 'b':
                            s = 'y';
                            break;
                            case 'c':
                            s = 'z';
                            break;
                            }
                  }          
            return ch;
}
}            

//Function 2 

char convPunct(char ch)
{
char s;
switch(ch)
{
case '0':
s = ',';
break;
case '1':
s = '.';
break;
case '2':
s = '$';
break;
case '3':
s = '&';
break;
case '4':
s = '%';
break;
case '5':
s = '*';
break;
case '6':
s = '(';
break;
case '7':
s = ')';
break;
case '8':
s = '?';
break;
case '9':
s = '!';
break;
}
}
//Function 3

char convDigit(char ch)
{
switch(ch)
{
case '!':
ch = '0';
break;
case ',':
ch = '1';
break;
case ')':
ch = '2';
break;
case '(':
ch = '3';
break;
case '?':
ch = '4';
break;
case '-':
ch = '5';
break;
case '&':
ch = '6';
break;
case '$':
ch = '7';
break;
case '.':
ch = '8';
break;
case '+':
ch = '9';
break;
}
}

//Function 4

char convRest(char ch)
{
if( int ch = 22)
{
    ch = ' ';
    return ch;
}

else if( int ch = 21)
{
     ch = '"\n"';
     return ch;
}

else
    return ch;
}
Much thanks go to spotswood for helping me create the complete caesar cipher. Now, I've created my whole program, designed to decode a specific message . However, it compiles just fine, but when data is inputted it just returns the exact same data as was entered (aka I enter 'c' it returns 'c' instead of 'z'). Does anybody know why?
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Old 10-16-09   #2 (permalink)
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Quote:
Originally Posted by tofunater View Post
Code:
#include <iostream>
#include <iomanip>
#include <ctype.h>
using namespace std;
char revCaesar(char);
char convPunct(char);
char convDigit(char);
char convRest (char);
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 revCaesar(ch);
                }
          else if (ispunct(ch))
                {
                 convPunct(ch);
                }
          else if (isdigit(ch))
                {
                 convDigit(ch);
                }
          else 
                 convRest(ch);
                
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
//Function 1 - undoes the Caesar Cipher
char revCaesar(char ch)
{
     if(isupper(ch))
            
           {
            if(ch <= 'D' and ch >= 'Z')
                  {
                   int ch;
                   ch = ch - 3;
                   return ch;
                  }
            else
                
                switch(ch)
                            {
                            case 'A':
                            ch = 'X';
                            break;
                            case 'B':
                            ch = 'Y';
                            break;
                            case 'C':
                            ch = 'Z';
                            break;
                            }
            return ch;
           }
     else
           {
            if(ch <= 'd' or ch >= 'z')
                  {
                   int ch;
                   ch = ch - 3;
                   return ch;
                  }
            else
                  {
                  char s;
                  switch(ch)
                            {
                            case 'a':
                            s = 'x';
                            break;
                            case 'b':
                            s = 'y';
                            break;
                            case 'c':
                            s = 'z';
                            break;
                            }
                  }          
            return ch;
}
}            

//Function 2 

char convPunct(char ch)
{
char s;
switch(ch)
{
case '0':
s = ',';
break;
case '1':
s = '.';
break;
case '2':
s = '$';
break;
case '3':
s = '&';
break;
case '4':
s = '%';
break;
case '5':
s = '*';
break;
case '6':
s = '(';
break;
case '7':
s = ')';
break;
case '8':
s = '?';
break;
case '9':
s = '!';
break;
}
}
//Function 3

char convDigit(char ch)
{
switch(ch)
{
case '!':
ch = '0';
break;
case ',':
ch = '1';
break;
case ')':
ch = '2';
break;
case '(':
ch = '3';
break;
case '?':
ch = '4';
break;
case '-':
ch = '5';
break;
case '&':
ch = '6';
break;
case '$':
ch = '7';
break;
case '.':
ch = '8';
break;
case '+':
ch = '9';
break;
}
}

//Function 4

char convRest(char ch)
{
if( int ch = 22)
{
    ch = ' ';
    return ch;
}

else if( int ch = 21)
{
     ch = '"\n"';
     return ch;
}

else
    return ch;
}
Much thanks go to spotswood for helping me create the complete caesar cipher. Now, I've created my whole program, designed to decode a specific message . However, it compiles just fine, but when data is inputted it just returns the exact same data as was entered (aka I enter 'c' it returns 'c' instead of 'z'). Does anybody know why?

you never change the value of ch.

IE ch = convDigit(ch);

or you can send it by reference
initialize convDigit ect like
char convDigit(char &ch)
and dont use the variable s, just change the value of ch.
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Old 10-16-09   #3 (permalink)
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I changed my int main to this,

Code:
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 ch == revCaesar(ch);
                }
                
          else if (ispunct(ch))
                {
                 ch == convPunct(ch);
                }
                
          else if (isdigit(ch))
                {
                 ch == convDigit(ch);
                }
                
          else 
                {
                 ch == convRest(ch);
                }
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
But I'm still having the same issue.
I also changed all of the 's' to ch in the switch statements. Any other ideas?
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Quote:
Originally Posted by iandh View Post
People like this know deep down inside that they are absolutely worthless, so they must constantly come up with new ways to give themselves worth, otherwise they may be tempted to end it all one day by OD'ing on Care-Bears marathons.

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Last edited by tofunater : 10-16-09 at 07:17 PM
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Old 10-16-09   #4 (permalink)
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Quote:
Originally Posted by tofunater View Post
I changed my int main to this,

Code:
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 ch == revCaesar(ch);
                }
                
          else if (ispunct(ch))
                {
                 ch == convPunct(ch);
                }
                
          else if (isdigit(ch))
                {
                 ch == convDigit(ch);
                }
                
          else 
                {
                 ch == convRest(ch);
                }
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
But I'm still having the same issue.
I also changed all of the 's' to ch in the switch statements. Any other ideas?
just remove one = sign and it should run fine.
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Old 10-17-09   #5 (permalink)
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Alright, revised code is as follows:
Code:
#include <iostream>
#include <iomanip>
#include <ctype.h>
using namespace std;
char revCaesar(char);
char convPunct(char);
char convDigit(char);
char convRest (char);
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 ch = revCaesar(ch);
                }
                
          else if (ispunct(ch))
                {
                 ch = convPunct(ch);
                }
                
          else if (isdigit(ch))
                {
                 ch = convDigit(ch);
                }
                
          else 
                {
                 ch = convRest(ch);
                }
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
//Function 1 - undoes the Caesar Cipher
char revCaesar(char ch)
{
     if(isupper(ch))
            
           {
            if(ch >= 'D' and ch <= 'Z')
                  {
                   ch = ch - 3;
                   return ch;
                  }
            else
                
                switch(ch)
                            {
                            case 'A':
                            ch = 'X';
                            break;
                            case 'B':
                            ch = 'Y';
                            break;
                            case 'C':
                            ch = 'Z';
                            break;
                            }
            return ch;
           }
     else if(ch >= 'd' or ch <= 'z')
          {
          ch = ch - 3;
          return ch;
          }
     else
         {
         switch(ch)
                   {
                   case 'a':
                   ch = 'x';
                   break;
                   case 'b':
                   ch = 'y';
                   break;
                   case 'c':
                   ch = 'z';
                   break;
                   }
         return ch;
         }
         
                            
            

}            

//Function 2 

char convPunct(char ch)
{

switch(ch)
{
case '0':
ch = ',';
break;
case '1':
ch = '.';
break;
case '2':
ch = '$';
break;
case '3':
ch = '&';
break;
case '4':
ch = '%';
break;
case '5':
ch = '*';
break;
case '6':
ch = '(';
break;
case '7':
ch = ')';
break;
case '8':
ch = '?';
break;
case '9':
ch = '!';
break;
}
}
//Function 3

char convDigit(char ch)
{
switch(ch)
{
case '!':
ch = '0';
break;
case ',':
ch = '1';
break;
case ')':
ch = '2';
break;
case '(':
ch = '3';
break;
case '?':
ch = '4';
break;
case '-':
ch = '5';
break;
case '&':
ch = '6';
break;
case '$':
ch = '7';
break;
case '.':
ch = '8';
break;
case '+':
ch = '9';
break;
}
}

//Function 4

char convRest(char ch)
{
if( int ch = 22)
{
    ch = ' ';
    return ch;
}

else if( int ch = 21)
{
     ch = '"\n"';
     return ch;
}

else
    return ch;
}
It correctly decodes A-Z and d-z, but nothin else is correct. Anybody else have any thoughts?
__________________

Quote:
Originally Posted by iandh View Post
People like this know deep down inside that they are absolutely worthless, so they must constantly come up with new ways to give themselves worth, otherwise they may be tempted to end it all one day by OD'ing on Care-Bears marathons.

System: Hedonism, Stanford Style
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Old 10-17-09   #6 (permalink)
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function 2 and 3 didn't return a value after making the return ch; after the switch's it looks like it works. i have no idea if its working properly tho.
Code:
#include <iostream>
#include <iomanip>
#include <ctype.h>
using namespace std;
char revCaesar(char);
char convPunct(char);
char convDigit(char);
char convRest (char);
int main()
{
    char ch;
    cin >> ch;
    while (ch)
    {
          if (isalpha(ch))
                {
                 ch = revCaesar(ch);
                }
                
          else if (ispunct(ch))
                {
                 ch = convPunct(ch);
                }
                
          else if (isdigit(ch))
                {
                 ch = convDigit(ch);
                }
                
          else 
                {
                 ch = convRest(ch);
                }
                cout<<ch;
                cin>>ch;
    }
system ("pause");
return 0;
}
//Function 1 - undoes the Caesar Cipher
char revCaesar(char ch)
{
     if(isupper(ch))
            
           {
            if(ch >= 'D' && ch <= 'Z')
                  {
                   ch = ch - 3;
                   return ch;
                  }
            else
                
                switch(ch)
                            {
                            case 'A':
                            ch = 'X';
                            break;
                            case 'B':
                            ch = 'Y';
                            break;
                            case 'C':
                            ch = 'Z';
                            break;
                            }
            return ch;
           }
     else if(ch >= 'd' || ch <= 'z')
          {
          ch = ch - 3;
          return ch;
          }
     else
         {
         switch(ch)
                   {
                   case 'a':
                   ch = 'x';
                   break;
                   case 'b':
                   ch = 'y';
                   break;
                   case 'c':
                   ch = 'z';
                   break;
                   }
         return ch;
         }
         
                            
            

}            

//Function 2 

char convPunct(char ch)
{

switch(ch)
{
case '0':
ch = ',';
break;
case '1':
ch = '.';
break;
case '2':
ch = '$';
break;
case '3':
ch = '&';
break;
case '4':
ch = '%';
break;
case '5':
ch = '*';
break;
case '6':
ch = '(';
break;
case '7':
ch = ')';
break;
case '8':
ch = '?';
break;
case '9':
ch = '!';
break;
}
return ch;
}
//Function 3

char convDigit(char ch)
{
switch(ch)
{
case '!':
ch = '0';
break;
case ',':
ch = '1';
break;
case ')':
ch = '2';
break;
case '(':
ch = '3';
break;
case '?':
ch = '4';
break;
case '-':
ch = '5';
break;
case '&':
ch = '6';
break;
case '$':
ch = '7';
break;
case '.':
ch = '8';
break;
case '+':
ch = '9';
break;
}
return ch;
}

//Function 4

char convRest(char ch)
{
if( int ch = 22)
{
    ch = ' ';
    return ch;
}

else if( int ch = 21)
{
     ch = '"\n"';
     return ch;
}

else
    return ch;
}
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Old 10-17-09   #7 (permalink)
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Quote:
Originally Posted by newbie1911 View Post
function 2 and 3 didn't return a value after making the return ch; after the switch's it looks like it works. i have no idea if its working properly tho.
Any idea why functions 2 and 3 don't return a value?
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Quote:
Originally Posted by iandh View Post
People like this know deep down inside that they are absolutely worthless, so they must constantly come up with new ways to give themselves worth, otherwise they may be tempted to end it all one day by OD'ing on Care-Bears marathons.

System: Hedonism, Stanford Style
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Old 10-17-09   #8 (permalink)
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Quote:
Originally Posted by tofunater View Post
Any idea why functions 2 and 3 don't return a value?
convPunct is trying to convert digits and convDigit is trying to convert punctuation.
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Old 10-17-09   #9 (permalink)
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Changed, but now I'm outputting letters with annunciation symbols above them instead of symbols, and mathematical signs instead of numbers ...
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Quote:
Originally Posted by iandh View Post
People like this know deep down inside that they are absolutely worthless, so they must constantly come up with new ways to give themselves worth, otherwise they may be tempted to end it all one day by OD'ing on Care-Bears marathons.

System: Hedonism, Stanford Style
CPU
i7 920 D0		 Motherboard
Asus P6T6 WS revolution		 Memory
6 gigs G-skill 		Graphics Card
Tri-sli 260's
Hard Drive
620aaks		 Sound Card
on board		 Power Supply
Zalman 850		 Case
hardwood techstation(soon)
CPU cooling
GTZ/bix 360/355 (soon)		 GPU cooling
water (soon)		 OS
Vista 64		 Monitor
22" Samsung 225BW
Overclock.net - 2009 Chimp Challenge Champions
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Old 10-17-09   #10 (permalink)
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upper case letters seem to work fine.
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