C Exercises: Merge two arrays of same size sorted in decending order
C Array: Exercise-7 with Solution
Write a program in C to merge two arrays of the same size sorted in descending order.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
void main()
{
int arr1[100], arr2[100], arr3[200];
int s1, s2, s3;
int i, j, k;
printf("\n\nMerge two arrays of same size sorted in decending order.\n");
printf("------------------------------------------------------------\n");
printf("Input the number of elements to be stored in the first array :");
scanf("%d",&s1);
printf("Input %d elements in the array :\n",s1);
for(i=0;i<s1;i++)
{
printf("element - %d : ",i);
scanf("%d",&arr1[i]);
}
printf("Input the number of elements to be stored in the second array :");
scanf("%d",&s2);
printf("Input %d elements in the array :\n",s2);
for(i=0;i<s2;i++)
{
printf("element - %d : ",i);
scanf("%d",&arr2[i]);
}
/* size of merged array is size of first array and size of second array */
s3 = s1 + s2;
/*----------------- insert in the third array------------------------------------*/
for(i=0;i<s1; i++)
{
arr3[i] = arr1[i];
}
for(j=0;j<s2; j++)
{
arr3[i] = arr2[j];
i++;
}
/*----------------- sort the array in decending order ---------------------------*/
for(i=0;i<s3; i++)
{
for(k=0;k<s3-1;k++)
{
if(arr3[k]<=arr3[k+1])
{
j=arr3[k+1];
arr3[k+1]=arr3[k];
arr3[k]=j;
}
}
}
/*--------------- Prints the merged array ------------------------------------*/
printf("\nThe merged array in decending order is :\n");
for(i=0; i<s3; i++)
{
printf("%d ", arr3[i]);
}
printf("\n\n");
}
Sample Output:
Merge two arrays of same size sorted in decending order. ------------------------------------------------------------ Input the number of elements to be stored in the first array :3 Input 3 elements in the array : element - 0 : 1 element - 1 : 2 element - 2 : 3 Input the number of elements to be stored in the second array :3 Input 3 elements in the array : element - 0 : 1 element - 1 : 2 element - 2 : 3 The merged array in decending order is : 3 3 2 2 1 1
Flowchart:

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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
Put an l (lowercased letter L) directly before the specifier.
unsigned long n; long m; printf("%lu %ld", n, m);
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