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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. int main()
  6. {
  7.     int n;
  8.     int m;
  9.     int i;
  10.     int k;
  11.     printf("Enter the size of array A: ");
  12.     scanf("%d",&n);
  13.     int arrA[n];
  14.     printf("Enter the element(s) of array A: ");
  15.     for(i=0;i<n;i++)
  16.         {   
  17.             scanf("%d",&arrA[i]);
  18.         }
  19.     for(i=0; i<n; i++)
  20.         {
  21.             printf("%d",arrA[i]);
  22.         }
  23.     printf("\n");
  24.  
  25.     printf("Enter the size of array B: ");
  26.     scanf("%d",&m);
  27.     int arrB[m];
  28.     printf("Enter the element(s) of array B: ");
  29.     for(i=0;i<m;i++)
  30.         {
  31.             scanf("%d",&arrB[i]);
  32.         }
  33.     for(i=0; i<m; i++)
  34.         {
  35.     printf("%d",arrB[i]);
  36.         }
  37.     printf("\n");
  38. 	k = arr_union(arrA, arrB, n, m);
  39.     printf("%d\n",k);
  40.     return 0;
  41. }
  42.  
  43.  
  44. int arr_union(int arrA[], int arrB[], int m, int n)
  45. {
  46.     int i = 0;
  47.     int j = 0;
  48.     int k = 0;
  49.     int l = 0;
  50.     if(n > m)
  51.         {
  52.             n = l;
  53.         }
  54.     else
  55.         {
  56.             m = l;
  57.         }
  58.     int arrC[l];
  59.     while ((i < n) && (j < m))
  60.     {
  61.         if (arrA[i] < arrB[j])
  62.         {
  63.             arrC[k] = arrA[i];
  64.             i++;
  65.             k++;
  66.         }
  67.         else if (arrA[i] > arrB[j])
  68.         {
  69.             arrC[k] = arrB[j];
  70.             j++;
  71.             k++;
  72.         }
  73.         else
  74.         {
  75.             arrC[k] = arrA[i];
  76.             i++;
  77.             j++;
  78.             k++;
  79.         }
  80.     }
  81.     if (i == n)
  82.     {
  83.         while (j < m)
  84.         {
  85.             arrC[k] = arrB[j];
  86.             j++;
  87.             k++;
  88.         }
  89.     }
  90.     else
  91.     {
  92.         while (i < n)
  93.         {
  94.             arrC[k] = arrA[i];
  95.             i++;
  96.             k++;
  97.         }
  98.     }
  99.     return(k);
  100. }
  101.  
Success #stdin #stdout 0s 2056KB
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stdin
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stdout
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Enter the size of array A: Enter the element(s) of array A: 1234
Enter the size of array B: Enter the element(s) of array B: 6789
0
https://ideone.com/ubB1eG
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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