Insert element in array

Q. Write a C program to insert or add new element in array, give with output of program.


Ans.


/*c program for insert new element in array*/
#include<stdio.h>
#include<conio.h>
#define SIZE 50
int main()
{
 int arr[SIZE];
 int i,index,tmp,num;
 printf("Enter total number of elements in array : ");
 scanf("%d", &num);
 for(i=0; i<num; i++)
 {
   printf("Enter %d element : ",i+1);
   scanf("%d", &arr[i]);
 }
 printf("\nEnter element number before to insert new element : ");
 scanf("%d", &index);
 printf("Enter new element : ");
 scanf("%d", &tmp);
 for(i=num-1; i>=index-1; i--)
    arr[i+1] = arr[i];
 arr[index-1] = tmp;
 printf("\n-- After insertion an element, new array list --\n\n");
 for(i=0; i<=num; i++)
   printf("\t%d\n",arr[i]);
 getch();
 return 0;
}


/**************** Output ******************/

Screen shot of insert element in array

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Array in reverse order

Q. Write a C program to display the array in reverse order.


Ans.


/*c program for display the array in reverse order*/
#include<stdio.h>
#include<conio.h>
#define SIZE 50
int main()
{
 int arr[SIZE];
 int i,index,tmp,num;
 printf("Enter total number of element in array : ");
 scanf("%d", &num);
 for(i=0; i<num; i++)
 {
  printf("Enter %d element : ",i+1);
  scanf("%d", &arr[i]);
 }
 printf("\n-- Array in reverse order --\n\n");
 for(i=0; i<num; i++);
 for(i--; i>=0; i--)
    printf("\t%d\n",arr[i]);
 getch();
 return 0;
}


/************* Output *********************/

Screen shot of  display array in reverse order

Related Programs:

1. How to create array in C?
2. How to calculate length of array?
3. Insert new element in array
4. Delete an exist element in array
5. Example of array C program

Delete element in array

Q. Write a C program to delete a value or element in array and user should guide which value is deleted.


Ans.


/*c program for delete a number in array*/
#include<stdio.h>
#include<conio.h>

#define SIZE 50
int main()
{
 int arr[SIZE];
 int i,num,index;
 printf("Enter total number of element in array : ");
 scanf("%d", &num);
 for(i=0; i<num; i++)
 {
  printf("Enter %d element : ",i+1);
  scanf("%d",&arr[i]);
 }
 printf("\nEnter element number which you want to delete : ");
 scanf("%d", &index);
 if(index >= num+1)
   printf("\nElement not found!!");
 else
 {
  for(i=index-1; i<num-1; i++)
     arr[i]=arr[i+1];
  printf("\n-- After deletion new array list --\n\n");
  for(i=0; i<num-1; i++)
    printf("\t%d\n",arr[i]);
 }
 getch();
 return 0;
}


/*************** Output *****************/

Screen shot of delete element in array

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2. How to calculate length of array?
3. Insert new element in array
4. Display array in reversing order
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Length of array

Q. Write a C program to calculate the length of a given array.


arr[] = {12, 7 , 9 , 4 , 22 , 63 , 74 , 5 , 1 }


Ans.


/*c program for calculate the length of array*/
#include<stdio.h>
int main()
{
 int arr[]={ 12,7,9,4,22,63,74,5,1 };
 int length;
 length = sizeof(arr)/sizeof(int);
 printf("Length of given array = %d",length);
 getch();
 return 0;
}


/*************** Output *****************/

Screen shot for calculate length of array c program

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2. Display array in reverse order
3. Insert new element in array
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Create array

Q. Write a program to create array.


Ans.


/*c program for creation of array or list of numbers*/
#include<stdio.h>
#include<conio.h>

#define SIZE 50
int main()
{
 int arr[SIZE];
 int i,num;
 printf("Enter total number of elements : ");
 scanf("%d", &num);
 for(i=0; i<num; i++)
 {
   printf("Enter %d element : ",i+1);
   scanf("%d", &arr[i]);
 }
 printf("\n-- Creation of array --\n\n");
 for(i=0; i<num; i++)
   printf("\t%d\n", arr[i]);
 getch();
 return 0;
}


/**************** Output ******************/

Screen shot for creation of array

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Character triangle

Q. Write a C program to print the following character triangle:


EDCBA
DCBA
CBA
BA
A


Ans:


/*c program for display the character triangle*/
#include<stdio.h>
#include<conio.h>
int main()
{
 char ch,r,c;
 int sp;
 printf("Enter last character of triangle : ");
 scanf("%c",&ch);
 if(ch>='a' && ch<='z')
    ch=ch-32;
 printf("\n");
 for(r='A'; r<=ch; ch--)
 {
   for(c=ch; c>=r; c--)
       printf("%c",c);
   printf("\n");
 }
 getch();
 return 0;
}


/****************OUTPUT****************/

Screen shot for character triangle

kg to pound convert

Q. Write a C program to convert kilograms to pounds.


Ans.


Formula for conversion kg to pounds:


1 kilogram = 2.20462262184878 pounds
Hence, pounds = 2.2 * kilograms


/*c program for conversion to kg to pound*/
#include<stdio.h>
#include<conio.h>
int main()
{
  float kg,pound;
  printf("Enter value of Kilograms : ");
  scanf("%f",&kg);
  pound=2.20462262184878*kg;
  printf("\n\t-- Convert Kilograms to pounds --\n");
  printf("\n%f kg = %f pound",kg,pound);
  getch();
  return 0;
}


The output of above program would be:

Figure: Screen shot for Convert Kilograms to pounds C program

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Linear Search

Q. Write a C program to search an element in a given list of elements using Liner Search.


Ans.


/*c program for linear search*/
#include<stdio.h>
#include<conio.h>
int main()
{
  int arr[20];
  int i,size,sech;
  printf("\n\t-- Linear Search --\n\n");
  printf("Enter total no. of elements : ");
  scanf("%d",&size);
  for(i=0; i<size; i++)
  {
    printf("Enter %d element : ",i+1);
    scanf("%d",&arr[i]);
  }
  printf("Enter the element to be searched: ");
  scanf("%d",&sech);
  for(i=0; i<size; i++)
  {
    if(sech==arr[i])
    {
      printf("Element exits in the list at position : %d",i+1);
      break;
    }
  }
  getch();
  return 0;
}


/**************** OUTPUT ****************/

Searching element through Linear Search

Singly linked list

Q. Write a C program that create a singly linked list.


Ans.


/*c program for creating singly linked list*/
#include<stdio.h>
#include<conio.h>
struct single_link_list
{
  int age;
  struct single_link_list *next;
};
typedef struct single_link_list node;
node *makenode(int );
int main()
{
  int ag;
  node *start,*last,*nn;   //nn=new node
  start=NULL;
  while(1)
  {
     printf("Enter your age : ");
     scanf("%d",&ag);
     if(ag==0)
        break;
     nn=makenode(ag);
     if(start==NULL)
     {
        start = nn;
        last = nn;
     }   
     else
     {
        last->next = nn;
        last = nn;
     }
  }
  printf("\n\t****Single linked list****\n\n");
  for(; start!=NULL; start=start->next)
     printf("%d\t",start->age);
  getch();
  return 0;
}


/*creation of node*/


node *makenode(int tmp)
{
  node *nn;
  nn = (node *)malloc(sizeof(node));
  nn->age = tmp;
  nn->next = NULL;
  return nn;
}

/**************** OUTPUT *****************/

Singly linked list

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2. Traversing the list
3. Search item in linked list
4. Insert an item
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6. All linked list operation in program