arrays in c

C program to merge two arrays.

Posted on by Sandeepa Nadahalli
Arrays in C.
Write a C program to merge two arrays.
In this program we check the elements of arrays A, B and put that elements in the resulted array C in sorted manner.
Read more about C Programming Language . and read the C Programming Language (2nd Edition). by K and R. 

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#include<stdio.h>
#include<conio.h>
void main( )
{
    int n,m,i,j,k,c[40],a[20],b[20];
    clrscr ();
    printf("Enter how many elements for array A?:n");
    scanf("%d",&n);
    printf  ("Enter how many elements for array B?:n");
   scanf("%d",&m);
    printf("Enter elements for A:-n");
    for(i=0;i<n;i++)
    scanf("%d",&a[i]);
    printf("Enter elements for B:-n");
    for(j=0;j<m;j++)
    scanf("%d",&b[j]);
    i=j=k=0;
    while(i<n&&j<m)
    {
        if(a[i]<b[j])
        c[k++]=a[i++];
        else
        if(a[i]>b[j])
        c[k++]=b[j++];
        else
        
        {
            c[k++]=b[j++];
            i++;
            j++;
        }
    }
    
    if(i<n)
    {
        int t;
        for(t=0;t<n;t++)
        
        c[k++]=a[i++];
    }
    if(j<m)
    {
        int t;
        for(t=0;t<m;t++)
        {
            c[k++]=b[j++];
        }
    }
    printf("nn Merged Array C:nn")
    for(k=0;k<(m+n);k++)
    printf("t n %d ",c[k]);
    getch();
}
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C program to cyclically permute the elements of an array.

Posted on by Sandeepa Nadahalli
Example programs to solve the problems of Arrays in C. In This program we, cyclically permute the array elements i.e. arr[0] becomes arr[1], arr[1] becomes arr[2]…so ..on. Read more about C Programming Language .

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* for personal and learning purposes. For permissions to use the
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***********************************************************/

#include <stdio.h>

void main ()
{
 int i,n,number[30];
 printf("Enter the value of the n = ");
 scanf ("%d", &n);
 printf ("Enter the numbersn");
 for (i=0; i<n; ++i)
 {
  scanf ("%d", &number[i]);
 }
 number[n] = number[0];

 for (i=0; i<n; ++i)
 {
  number[i] = number[i+1];
 }
 printf ("Cyclically permted numbers are given below n");
 for (i=0; i<n; ++i)
 printf ("%dn", number[i]);
}
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C program to delete the specified integer from the Array.

Posted on by Sandeepa Nadahalli
Example programs to solve the problems of Arrays in C. In This program we, delete the Array Element, if entered element is in the Array, Else gives the Error message. Read more about C Programming Language .

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* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
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* and browse!
* 
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***********************************************************/

                                   */

#include <stdio.h>

void main()
{
 int  vectx[10];
 int  i, n, pos, element, found = 0;

 printf("Enter how many elementsn");
 scanf("%d", &n);

 printf("Enter the elementsn");
 for(i=0; i<n; i++)
 {
  scanf("%d", &vectx[i]);
 }

 printf("Input array elements aren");
 for(i=0; i<n; i++)
 {
  printf("%dn", vectx[i]);
 }

 printf("Enter the element to be deletedn");
 scanf("%d",&element);

 for(i=0; i<n; i++)
 {
  if ( vectx[i] == element)
  {
   found = 1;
   pos = i;
   break;
  }
 }

 if (found == 1)
 {
  for(i=pos; i< n-1; i++)
  {
   vectx[i] = vectx[i+1];
  }

  printf("The resultant vector is n");
  for(i=0; i<n-1; i++)
  {
   printf("%dn",vectx[i]);
  }
 }
 else
  printf("Element %d is not found in the vectorn", element);

}         
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C program to split the array from perticular position

Posted on by Sandeepa Nadahalli
Example programs to solve the problems of Arrays in C. In This program we, cyclically permute the array elements i.e. arr[0] becomes arr[1], arr[1] becomes arr[2]…so ..on. Read more about C Programming Language .

/***********************************************************
* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                      Happy Coding
***********************************************************/



#include <stdio.h>

void main ()
{
 int number[30];
 int i,n,a,j;

 printf ("Enter the value of nn");
 scanf ("%d",&n);

 printf ("enter the numbersn");
 for (i=0; i<n; ++i)
  scanf ("%d", &number[i]);

 printf ("Enter the position of the element to split the array n");
 scanf ("%d",&a);

 for (i=0; i<a; ++i)
 {
  number[n] = number[0];

  for (j=0; j<n; ++j)
  {
   number[j] = number[j+1];
  }
 }

 printf("The resultant array isn");
 for (i=0; i<n; ++i)
 {
  printf ("%dn",number[i]);
 }
}           
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C program to find size-of an array.

Posted on by Sandeepa Nadahalli
Example programs to solve the problems of Arrays in C. In This program we, find the size of the array using sizeof() operator. Read more about C Programming Language .

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* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
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* and browse!
* 
*                      Happy Coding
***********************************************************/

#include <stdio.h>
int main( )
{

 int i,num;
 printf("nEnter the hoe many elements you want?n");
 scanf("%d",&num);

 int a[num];
 printf("nEnter the %d elements:n",num);
 for(i=0;i<num;i++)
 {
  scanf("%d",&a[i]);
 }
 printf("Elements in array are:n");
 for(i=0;i<num;i++)
 {
  printf("%dn",a[i]);
 }
 printf(" The size of the array is: %d Bytes.",(int)sizeof(a));

 return 0 ;
}
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Array search program in C

Posted on by Sandeepa Nadahalli

Very often we encounter a situation where we have to search for a given target value in a list of values. Simple value types like integers are stored in arrays. This program demonstrates how to do a search within an array by using a method called linear search.

Linear search, also called as ‘Sequential search’ is a technique of finding a target value within a list. It sequentially checks each element of the list with target value until a match is found or the list is exhausted. This approach may be very inefficient to be used in practical problem solving. However, this is very easy to understand and implement. You can read more about linear search.

This program implements linear search to search for a given integer key in an integer array. We have many more C programs that deal with arrays. See more Programs on Arrays in C.

The Program

#include <stdio.h>
#include <conio.h>
void main()
{
int array[10];
int i, N, keynum, found=0;
printf("Enter the value of N\n");
scanf("%d",&N);
printf("Enter the elements one by one\n");
for(i=0; i<N ; i++)
{
scanf("%d",&array[i]);
}
printf("Input array is\n");
for(i=0; i<N ; i++)
{
printf("%d\n",array[i]);
}
printf("Enter the element to be searched\n");
scanf("%d", &keynum);
for ( i=0; i < N ; i++)
{
if( keynum == array[i] )
{
found = 1;
break;
}
}
if ( found == 1)
printf("Element found in the given array");
else
printf("Element was not found in the array");
} /* End of main */
view raw Linear_array_search.c hosted with ❤ by GitHub

Sample Output


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C program to implement MERGE sort.

Posted on by Sandeepa Nadahalli
Merge sort is based on the divide conquer strategy. Array is divided in to two halves.if the array length is n, then it is divided into n/2,n/4,n/8…. and each part is sorted independently, then conquered into the sorted array. The efficiency of merge sort is O(n log n). Read more about C Programming Language .

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* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
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* and browse!
* 
*                      Happy Coding
***********************************************************/



#include <stdio.h>
#include <stdlib.h>

#define MAX_ARY 10

void merge_sort(int x[], int end, int start);

int main(void) {
 int ary[MAX_ARY];
 int j = 0;

 printf("nnEnter the elements to be sorted: n");
 for(j=0;j<MAX_ARY;j++)
  scanf("%d",&ary[j]);

 /* array before mergesort */
 printf("Before    :");
 for(j = 0; j < MAX_ARY; j++)
  printf(" %d", ary[j]);

 printf("n");

 merge_sort(ary, 0, MAX_ARY - 1);

 /* array after mergesort */
 printf("After Merge Sort :");
 for(j = 0; j < MAX_ARY; j++)
  printf(" %d", ary[j]);

 printf("n");
 getch();
}

/* Method to implement Merge Sort*/
void merge_sort(int x[], int end, int start) {
 int j = 0;
 const int size = start - end + 1;
 int mid  = 0;
 int mrg1 = 0;
 int mrg2 = 0;
 int executing[MAX_ARY];

 if(end == start)
  return;

 mid  = (end + start) / 2;

 merge_sort(x, end, mid);
 merge_sort(x, mid + 1, start);

 for(j = 0; j < size; j++)
  executing[j] = x[end + j];

 mrg1 = 0;
 mrg2 = mid - end + 1;

 for(j = 0; j < size; j++) {
  if(mrg2 <= start - end)
   if(mrg1 <= mid - end)
    if(executing[mrg1] > executing[mrg2])
     x[j + end] = executing[mrg2++];
    else
     x[j + end] = executing[mrg1++];
   else
    x[j + end] = executing[mrg2++];
  else
   x[j + end] = executing[mrg1++];
 }
}
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C Program: Insert into an array

Posted on by Sandeepa Nadahalli
Arrays in C
Write a C program to insert a particular element in a specified position in a given array.Read more about C Programming Language .

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* programs for commercial purposes,
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* and browse!
* 
*                          Happy Coding
***********************************************************/

                                                        */

#include <stdio.h>
#include <conio.h>

void main()
{
 int  x[10];
 int  i, j, n, m, temp, key, pos;

 clrscr();

 printf("Enter how many elementsn");
 scanf("%d", &n);

 printf("Enter the elementsn");
 for(i=0; i<n; i++)
 {
  scanf("%d", &x[i]);
 }

 printf("Input array elements aren");
 for(i=0; i<n; i++)
 {
  printf("%dn", x[i]);
 }

 for(i=0; i< n; i++)
 {
  for(j=i+1; j<n; j++)
  {
   if (x[i] > x[j])
   {
    temp = x[i];
    x[i] = x[j];
    x[j] = temp;
   }
  }
 }

 printf("Sorted list isn");
 for(i=0; i<n; i++)
 {
  printf("%dn", x[i]);
 }

 printf("Enter the element to be insertedn");
 scanf("%d",&key);

 for(i=0; i<n; i++)
 {
  if ( key < x[i] )
  {
   pos = i;
   break;
  }
 }

 m = n - pos + 1 ;

 for(i=0; i<= m ; i++)
 {
  x[n-i+2] = x[n-i+1] ;
 }

 x[pos] = key;

 printf("Final list isn");
 for(i=0; i<n+1; i++)
 {
  printf("%dn", x[i]);
 }
}           /* End of main() */
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C Program: Array Summation Using Pointers

Posted on by Sandeepa Nadahalli
Arrays in C.
Write a C program to read N integers and store them in an array A, and so find the sum of all these elements using pointer. Output the given array and and the computed sum with suitable heading. Read more about C Programming Language .

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* You can use all the programs on  www.c-program-example.com
* for personal and learning purposes. For permissions to use the
* programs for commercial purposes,
* contact [email protected]
* To find more C programs, do visit www.c-program-example.com
* and browse!
* 
*                       Happy Coding
***********************************************************/

    

#include <stdio.h>
#include <conio.h>
#include <malloc.h>

void main()
{
 int i,n,sum=0;
 int *a;

 clrscr();

 printf("Enter the size of array An");
 scanf("%d", &n);

 a=(int *) malloc(n*sizeof(int));   /*Dynamix Memory Allocation */

 printf("Enter Elements of First Listn");
 for(i=0;i<n;i++)
 {
  scanf("%d",a+i);
 }

 /*Compute the sum of all elements in the given array*/
 for(i=0;i<n;i++)
 {
  sum = sum + *(a+i);
 }

 printf("Sum of all elements in array = %dn", sum);

}     /* End of main() */
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C Program to find the average of largest two of the given numbers in the array.

Posted on by Sandeepa Nadahalli
Example programs to solve the problems of Arrays in C.
Write a C program to read in four integer numbers into an array and find the average of largest two of the given numbers without sorting the array. The program should output the given four numbers and the average with suitable headings. Read more about C Programming Language .

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* programs for commercial purposes,
* contact [email protected]
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* and browse!
* 
*                                  Happy Coding
***********************************************************/



#include <stdio.h>
#include <conio.h>
#define MAX 4

void main()
{
 int a[MAX], i, l1,l2,temp;

 clrscr();

 printf("Enter %d integer numbersn", MAX);
 for (i=0; i < MAX; i++)
 {
  scanf("%d", &a[i]);
 }

 printf("Input interger aren");
 for (i=0; i < MAX; i++)
 {
  printf("%5d", a[i]);
 }

 printf("n");

 l1 = a[0];  /*assume first element of array is the first largest*/
 l2 = a[1];  /*assume first element of array is the second largest*/

 if (l1 < l2)
 {
  temp = l1;
  l1 = l2;
  l2 = temp;
 }

 for (i=2;i<4;i++)
 {
  if (a[i] >= l1)
  {
   l2 = l1;
   l1 = a[i];
  }
  else if(a[i] > l2)
  {
   l2= a[i];
  }
 }

 printf("n%d is the first largestn", l1);
 printf("%d is the second largestn", l2);
 printf("nAverage of %d and %d = %dn", l1,l2, (l1+l2)/2);

}
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