What is wrong on last line of this code???

[jacob_76505]

I am in the process of writing a program that contains sets A and B and a universal set U. The code must first check that A and B are part of the universal set. Then I must find the Union, Intersection, difference, complement (of only A), symmetric difference, and the Cartesian product of sets A and B.Below is my code that I have done so far. I am getting an error that says "expected declaration or statement at end of input" on my last line. Can you tell me what is wrong? My code for the difference is also not working or printing.

#include<stdio.h>
#include<conio.h>
void main()
{
int k,s,n, i=0,j,size=20;
int U[20], A[20],B[20], C[20];


printf ("Enter the elements (Integer Between -100 and 100) for the universal set :");
for (i=0;i<20;i++)

{
    scanf ("%d",&U[i]);
}

printf ("Enter the elements (Integer Between -100 and 100) for set A :");
for (i=0;i<20;i++)

{
    scanf ("%d",&A[i]);
}

printf ("Enter the elements (Integer Between -100 and 100) for the set B :");
for (i=0;i<20;i++)

{
    scanf ("%d",&B[i]);
}

printf ("Elements of the universal set you entered:\n");
for (i=0;i<20;i++)
{
    printf("\t%d",U[i]);
}
printf ("\n");
printf ("Elements of set A you entered:\n");
for (i=0;i<20;i++)
{
    printf("\t%d",A[i]);
}
printf ("\n");
printf ("Elements of set B you entered:\n");
for (i=0;i<20;i++)
{
    printf("\t%d",B[i]);
}
printf ("\n");

printf("\nThe intersection of the two arrays are: ");






printf ("\n The Difference of A and B are: ");

for (i = 0; i < n; ++i)
{
    C[i] = A[i] & ~B[i];
}
printf ("\t%d",C[i]);




printf("\n\n\nThe union of the two arrays are: ");
while (i<size)
{
k=0;
for (j=0; j<size; j++)
{
if (A[i] == B[j])
{
printf("\t%d", A[i]);
i++;k++;
}
}
if(k==0)
i++;

}

i=0;
while (i<size)
 {
k=0;
for (j=0; j<size; j++)
  {
if (B[i] == A[j])
  {
i++;k++;
 }
}
if(k==0)
  {
    printf("\t%d",B[i]);
    i++;
  }

[Salem]

What is wrong is your chaotic indentation has led you to miss a closing brace.

#include<stdio.h>
#include<conio.h>
void main()
{
  int k, s, n, i = 0, j, size = 20;
  int U[20], A[20], B[20], C[20];

  printf("Enter the elements (Integer Between -100 and 100) for the universal set :");
  for (i = 0; i < 20; i++)
  {
    scanf("%d", &U[i]);
  }

  printf("Enter the elements (Integer Between -100 and 100) for set A :");
  for (i = 0; i < 20; i++)
  {
    scanf("%d", &A[i]);
  }

  printf("Enter the elements (Integer Between -100 and 100) for the set B :");
  for (i = 0; i < 20; i++)
  {
    scanf("%d", &B[i]);
  }

  printf("Elements of the universal set you entered:\n");
  for (i = 0; i < 20; i++) {
    printf("\t%d", U[i]);
  }
  printf("\n");
  printf("Elements of set A you entered:\n");
  for (i = 0; i < 20; i++) {
    printf("\t%d", A[i]);
  }
  printf("\n");
  printf("Elements of set B you entered:\n");
  for (i = 0; i < 20; i++) {
    printf("\t%d", B[i]);
  }
  printf("\n");

  printf("\nThe intersection of the two arrays are: ");
  printf("\n The Difference of A and B are: ");

  for (i = 0; i < n; ++i) {
    C[i] = A[i] & ~B[i];
  }
  printf("\t%d", C[i]);

  printf("\n\n\nThe union of the two arrays are: ");
  while (i < size) {
    k = 0;
    for (j = 0; j < size; j++) {
      if (A[i] == B[j]) {
        printf("\t%d", A[i]);
        i++;
        k++;
      }
    }
    if (k == 0)
      i++;
  }

  i = 0;
  while (i < size) {
    k = 0;
    for (j = 0; j < size; j++) {
      if (B[i] == A[j]) {
        i++;
        k++;
      }
    }
    if (k == 0) {
      printf("\t%d", B[i]);
      i++;
    }
} //!! ONE HERE

Then there is the whole "void main" and "conio.h" thing, which strongly suggests you're using obsolete compilers / books / college tutors.

[jacob_76505]

Still gives me the same error "expected declaration or statement at end of input", but the code still runs so I don't think its a big deal. How come my intersection code doesn't work and my difference portion of the code doesn't even print (printf is not working) on when my code is run?

Thanks for your help!!!

[bernt]

Still gives me the same error "expected declaration or statement at end of input", but the code still runs so I don't think its a big deal.

Your code doesn't compile - what makes you think it can be executed? You're just running whatever you had from the last time you were able to compile.

Also:

    ...
    ...
    if (k == 0) {
      printf("\t%d", B[i]);
      i++;
    }
  } //!! ONE HERE
} //<--and another