C Program to Merge the Elements of 2 Sorted Array

#include < stdio.h>
 
void main()
{
    int array1[50], array2[50], array3[100], m, n, i, j, k = 0;
 
    printf("\n Enter size of array Array 1: " );
    scanf("%d" , &m);
    printf("\n Enter sorted elements of array 1: \n" );
    for (i = 0; i < m; i++)
    {
        scanf("%d" , &array1[i]);
    }
    printf("\n Enter size of array 2: " );
    scanf("%d" , &n);
    printf("\n Enter sorted elements of array 2: \n" );
    for (i = 0; i < n; i++)
    {
        scanf("%d" , &array2[i]);
    }
    i = 0;
    j = 0;
    while (i < m && j < n)
    {
        if (array1[i] < array2[j])
        {
            array3[k] = array1[i];
            i++;
        }
        else
        {
            array3[k] = array2[j];
            j++;
        }
        k++;
    }
    if (i >= m)
    {
        while (j < n)
        {
            array3[k] = array2[j];
            j++;
            k++;
        }
    }
    if (j >= n)
    {
        while (i < m)
        {
            array3[k] = array1[i];
            i++;
            k++;
        }
    }
    printf("\n After merging: \n" );
    for (i = 0; i < m + n; i++)
    {
        printf("\n%d" , array3[i]);
    }
}

Output

  
Enter  size  of array Array  1 :  4 
 
Enter sorted elements of array  1 :
 12 
 18 
 40 
 60 
 
Enter  size  of array  2 :  4 
 
Enter sorted elements of array  2 :
 47 
 56 
 89 
 90 
 
After merging:
 
 12 
 18 
 40 
 47 
 56 
 60 
 89 
 90 

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