sets of letters

Pages: 12
coolProgramer5 (193)
ok i fixed 
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enum letters { a,b,c,d }; // declares a type
typedef enum {a, b, c, d} // enum is a keyword, this is an error


and i fixed the semicolon however, I am confused about the rest. Im really sorry.
tummychow (1210)
Alright then. Look at the arguments list for your union/intersection very carefully.
They take char parameters right?
Now look in the loops.
There is a subscript next to those chars right?
Now then, can you subscript an individual (NON-ARRAY) char variable?

Now that we've cleared that up, do you know how to pass an array to a function? If not go into this website's tutorial and read the array, then pointer chapters.
(I'm sorry to sound like I'm babying you through this but you seem to need it.)
coolProgramer5 (193)
ok i made typedef and the arrays global and when look at my errors my compiler is saying the the values i have in my arrays aren't declared I don't understand why. And I don't mine you babying me.

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#include <stdio.h>
#include <ctype.h>
#include "simpio.h"

char C[];
char A[] = {a,b,c,d,e,f,g,h};
char B[] = {a,c,e,g};
char unions();
bool intersection();
bool contain();
int main()
{
    printf("%c ", A);
    printf("%c ", B);
      unions(A, B);
      intersection(A, B);
      contain(A, B);
      return 0;
}
char unions()
{
     printf("AUB=");
     int x;
                  for (x=0; x < 10; x++)
                  { 
                    if (A[x] == true || B[x] == true)
                    {
                           C[x] == true; 
                           printf("%c, ", C[x]);
                    }
                  }  
}
bool intersections()
{
     int x, y;
     y=0;
                  for (x=0; x<4; x++)
                  {
                      if (B[x] == A[y])
                      {
                               printf("%c, ", B[x]);
                      }
                      if (B[x] != A[y])
                      {
                               y+=1;
                      }
                  }
}
bool contain()
{
     int x, y;
     x=0;
                  while (x<4)
                  {
                        for (y=0; y<10; y++)
                        {
                            if (B[y] != A[x])
                            {
                                     printf("\nFALSE");
                                     break; 
                            }
                            if (B[y] == A[x])
                            {
                                     y+=1;
                            }
                        }
                  }
                  getchar();
}
Last edited on
tummychow (1210)
Weren't you going to use an array of booleans anyway? I just remembered that myself.
coolProgramer5 (193)
Oh I forgot about that. But even thou I changed my arrays to bool instead of char i still get all those value declaration errors.

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#include <stdio.h>
#include <ctype.h>
#include "simpio.h"

bool C[];
bool A[] = {a,b,c,d,e,f,g,h};
bool B[] = {a,c,e,g};
char unions();
bool intersection();
bool contain();
int main()
{
    printf("%c ", A);
    printf("%c ", B);
      unions(A, B);
      intersection(A, B);
      contain(A, B);
      return 0;
}
char unions()
{
     printf("AUB=");
     int x;
                  for (x=0; x < 10; x++)
                  { 
                    if (A[x] == true || B[x] == true)
                    {
                           C[x] == true; 
                           printf("%c, ", C[x]);
                    }
                  }  
}
bool intersections()
{
     int x, y;
     y=0;
                  for (x=0; x<4; x++)
                  {
                      if (B[x] == A[y])
                      {
                               printf("%c, ", B[x]);
                      }
                      if (B[x] != A[y])
                      {
                               y+=1;
                      }
                  }
}
bool contain()
{
     int x, y;
     x=0;
                  while (x<4)
                  {
                        for (y=0; y<10; y++)
                        {
                            if (B[y] != A[x])
                            {
                                     printf("\nFALSE");
                                     break; 
                            }
                            if (B[y] == A[x])
                            {
                                     y+=1;
                            }
                        }
                  }
                  getchar();
}
tummychow (1210)
Did you take into account the fact that you were initializing with characters still?
EDIT: Although it is no longer relevant I know why the code was uninitialized in your code with char[]. Take a look at the initialization list again. Where were the single quotes?
Last edited on
coolProgramer5 (193)
oh ok. major help man. ok so now there are only 6 errors instead of 1 million. however, I dont quite understand them here's one error
too many arguments to function `char unions()' 


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#include <stdio.h>
#include <ctype.h>
#include "simpio.h"

bool C;
bool A[] = {'a','b','c','d','e','f','g','h'};
bool B[] = {'a','c','e','g'};
char unions();
bool intersection();
bool contain();
int main()
{
    printf("%c ", A);
    printf("%c ", B);
      unions(A, B);
      intersection(A, B);
      contain(A, B);
      return 0;
}
char unions()
{
     printf("AUB=");
     int x;
                  for (x=0; x < 10; x++)
                  { 
                    if (A[x] == true || B[x] == true)
                    {
                           C == true; 
                           printf("%c, ", C);
                    }
                  }  
}
bool intersections()
{
     int x, y;
     y=0;
                  for (x=0; x<4; x++)
                  {
                      if (B[x] == A[y])
                      {
                               printf("%c, ", B[x]);
                      }
                      if (B[x] != A[y])
                      {
                               y+=1;
                      }
                  }
}
bool contain()
{
     int x, y;
     x=0;
                  while (x<4)
                  {
                        for (y=0; y<10; y++)
                        {
                            if (B[y] != A[x])
                            {
                                     printf("\nFALSE");
                                     break; 
                            }
                            if (B[y] == A[x])
                            {
                                     y+=1;
                            }
                        }
                  }
                  getchar();
}


Last edited on
coolProgramer5 (193)
this is the other error

at this point in file
this error is really confusing me because i've never had error before. Please help.

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#include <stdio.h>
#include "simpio.h"

char C;
char A[] = {'a','b','c','d','e','f','g','h'}; /* these are set A's values */
char B[] = {'a','c','e','g'}; /* these are set A's values */
char unions();
bool intersection();
bool contain();
int main()
{
    int x;
    for (x=0; x<8; x++)
    {
    printf("%c ", A[x]);
    }
    for (x=0; x<8; x++)
    {
    printf("%c ", B[x]);
    }
      unions(A, B);
      intersection(A, B);
      contain(A, B);
      return 0;
}
char unions()
{
     printf("AUB=");
     int x;
                  for (x=0; x < 10; x++)
                  { 
                    if (A[x] == true || B[x] == true)
                    {
                           C == true; 
                           printf("%c, ", C);
                    }
                  }  
}
bool intersections()
{
     int x, y;
     y=0;
                  for (x=0; x<4; x++)
                  {
                      if (B[x] == A[y])
                      {
                               printf("%c, ", B[x]);
                      }
                      if (B[x] != A[y])
                      {
                               y+=1;
                      }
                  }
}
bool contain()
{
     int x, y; 
    y=0;
                  while (y<4)
                  {
                        for (x=0; x<10; x++)
                        {
                            if (B[y] != A[x])
                            {
                                     printf("\nFALSE");
                                     break; 
                            }
                             if (B[3]==A[x])
                            {
                                           printf("%c\n", B[3]);
                            }
                            if (B[y] == A[x])
                            {
                                     y+=1;
                            }
                           
                        }
                  }
                  getchar();
}
Last edited on
Disch (13742)
You're passing 'A' and 'B' as parameters to your functions.

But your functions don't take any parameters. Change your prototypes and function bodies so that A and B are taken as parameters.

You should also make A and B local to main instead of making them global.

Also -- your functions should either return something... or they should be void.
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Pages: 12