### C Program to Merge Two Sorted Arrays

In this post, we will learn to merge two sorted arrays into a single array so that the resulting merged array is also in sorted form.

# C Program to Merge Two Sorted Arrays

``````#include<stdio.h>
#define max 100

void main()
{
int p[max], q[max], r[max];
int m,n;
int i,j,k;
printf("Enter length of first array:");
scanf("%d",&m);
printf("Enter %d elements of first array in sorted order \n",m);
for(i=0;i<m;i++ )
scanf("%d",&p[i]);
printf("\nEnter length of second array:");
scanf("%d",&n);
printf("Enter %d elements of second array in sorted order\n",n);
for(i=0;i<n;i++ )
scanf("%d",&q[i]);
i=j=k=0;
while ((i<m) && (j <n))
{
if(p[i] < q[j])
{
r[k]=p[i];
i++;
k++;

}
else
{
if(q[j]< p[i])
{
r[k]=q[j];
k++;
j++;
}
else
{
r[k]=p[i];
k++;
i++;
r[k]=q[j];
k++;
j++;
}
}
}
while(i<m)
{
r[k]=p[i];
k++;
i++;
}
while(j<n)
{
r[k]=q[j];
k++;
j++;
}

printf("\nThe combined sorted array is:\n");
for(i = 0;i<k;i++)
printf("%d\n",r[i]);
}
``````

Output:

``````Enter length of first array:5
Enter 5 elements of first array in sorted order
10
20
30
40
50

Enter length of second array:6
Enter 6 elements of second array in sorted order
30
40
0 50
60
70
80

The combined sorted array is:
10
20
30
30
40
40
50
50
60
70
80``````

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