C Exercises: Search an element in a Singly Linked List
C Linked List : Exercise-10 with Solution
Write a program in C to search an existing element in a singly linked list.
Pictorial Presentation:
Sample Solution:
C Code:
#include <stdio.h>
#include <stdlib.h>
struct node
{
int num;
struct node *nextptr;
}
stnode, *ennode;
int FindElement(int);
void main()
{
int n,i,FindElem,FindPlc;
stnode.nextptr=NULL;
ennode=&stnode;
printf("\n\n Linked List : Search an element in a Singly Linked List :\n");
printf("---------------------------------------------------------------\n");
printf(" Input the number of nodes : ");
scanf("%d", &n);
printf("\n");
for(i=0;i< n;i++)
{
ennode->nextptr=(struct node *)malloc(sizeof(struct node));
printf(" Input data for node %d : ",i+1);
scanf("%d",&ennode->num);
ennode=ennode->nextptr;
}
ennode->nextptr=NULL;
printf("\n Data entered in the list are :\n");
ennode=&stnode;
while(ennode->nextptr!=NULL)
{
printf(" Data = %d\n",ennode->num);
ennode=ennode->nextptr;
}
printf("\n");
printf(" Input the element to be searched : ");
scanf("%d",&FindElem);
FindPlc=FindElement(FindElem);
if(FindPlc<=n)
printf(" Element found at node %d \n\n",FindPlc);
else
printf(" This element does not exists in linked list.\n\n");
}
int FindElement(int FindElem)
{
int ctr=1;
ennode=&stnode;
while(ennode->nextptr!=NULL)
{
if(ennode->num==FindElem)
break;
else
ctr++;
ennode=ennode->nextptr;
}
return ctr;
}
Sample Output:
Linked List : Search an element in a Singly Linked List : --------------------------------------------------------------- Input the number of nodes : 3 Input data for node 1 : 2 Input data for node 2 : 5 Input data for node 3 : 8 Data entered in the list are : Data = 2 Data = 5 Data = 8 Input the element to be searched : 5 Element found at node 2
Flowchart:
FindElement() :
C Programming Code Editor:
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Previous: Write a program in C to delete the last node of Singly Linked List.
Next: Write a program in C to create and display a doubly linked list.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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