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  1. #include <stdio.h>
  2.  
  3. typedef struct {
  4.   int n;//the cardinal of the set
  5.   int set[100];
  6. } TSet;
  7.  
  8. void read(TSet *p) {
  9.    printf("number of elements N = ");
  10.    scanf("%d",&p->n);
  11.    for(int i = 0; i < p->n; ++i) scanf("%d",&p->set[i]);
  12. }
  13.  
  14. int belongTo(TSet p, int elem){
  15.   int is = 0;
  16.   for(int i = 0; i < p.n && !is; ++i) {
  17.     if(elem == p.set[i]) {
  18.       is = 1;
  19.     }
  20.   }
  21.   return is;
  22. }
  23.  
  24. void display(TSet p) {
  25.   for(int i = 0; i < p.n-1; ++i) printf("%d, ",p.set[i]);
  26.   printf("%d",p.set[p.n-1]);
  27.   printf("\n");
  28. }
  29.  
  30. int main(int argc, char const *argv[]) {
  31.   TSet A, B,//first and second sets
  32.        I, //intersection
  33.        D, //difference
  34.        R; //union
  35.   I.n = 0;
  36.   D.n = 0;
  37.  
  38.   //read the first set
  39.   read(&A);
  40.   //read the second set
  41.   read(&B);
  42.  
  43.   printf("Set A:\n");
  44.   display(A);
  45.   printf("Set B:\n");
  46.   display(B);
  47.   R = B;
  48.  
  49.   for(int i = 0; i < A.n;++i) {
  50.      if(belongTo(B, A.set[i])==1) {
  51.         I.set[I.n++] = A.set[i];
  52.      } else {
  53.        D.set[D.n++] = A.set[i];
  54.        R.set[R.n++] = A.set[i];
  55.      }
  56.   }
  57.   printf("Intersection:\n");
  58.   display(I);
  59.   printf("Difference:\n");
  60.   display(D);
  61.   printf("Union:\n");
  62.   display(R);
  63.   return 0;
  64. }
Success #stdin #stdout 0.01s 5544KB
comments (?)
stdin
copy 
5
1
2
3
4
5
3
-1
2
3
stdout
copy 
number of elements N = number of elements N = Set A:
1, 2, 3, 4, 5
Set B:
-1, 2, 3
Intersection:
2, 3
Difference:
1, 4, 5
Union:
-1, 2, 3, 1, 4, 5
https://ideone.com/tMPob1
Sets: union, diff, intersect
language:
C (gcc 8.3)
created:
1 year ago
visibility:
secret

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