C Exercises: Convert a Singly Linked list into a string
C Singly Linked List : Exercise-11 with Solution
Write a C program to convert a Singly Linked list into a string and returns it.
Sample Solution:
C Code:
#include<stdio.h>
#include <stdlib.h>
#include <string.h>
struct node
{
int num; //Data of the node
struct node *nextptr; //Address of the next node
}*stnode;
void createNodeList(int n);
char* toString() {
char* str = (char*) malloc(sizeof(char) * 100);
struct node *tmp = stnode;
int i = 0;
while(tmp != NULL) {
sprintf(str + i, "%d ", tmp->num); // append the value to the string
tmp = tmp->nextptr;
i += strlen(str + i);
}
return str;
}
int main()
{
int n;
printf("\nLinked List: Convert a Singly Linked list into a string\n");
printf("-------------------------------------------------------------\n");
printf("Input the number of nodes: ");
scanf("%d", &n);
createNodeList(n);
printf("\nReturn data entered in the list as a string:\n");
printf("The linked list: %s", toString());
return 0;
}
void createNodeList(int n)
{
struct node *fnNode, *tmp;
int num, i;
stnode = (struct node *)malloc(sizeof(struct node));
if(stnode == NULL) //check whether the fnnode is NULL and if so no memory allocation
{
printf(" Memory can not be allocated.");
}
else
{
printf(" Input data for node 1 : ");
scanf("%d", &num);
stnode->num = num;
stnode->nextptr = NULL;
tmp = stnode;
// Creating n nodes and adding to linked list
for(i=2; i<=n; i++)
{
fnNode = (struct node *)malloc(sizeof(struct node));
if(fnNode == NULL)
{
printf(" Memory can not be allocated.");
break;
}
else
{
printf(" Input data for node %d : ", i);
scanf(" %d", &num);
fnNode->num = num;
fnNode->nextptr = NULL;
tmp->nextptr = fnNode;
tmp = tmp->nextptr;
}
}
}
}
Sample Output:
Linked List: Convert a Singly Linked list into a string ------------------------------------------------------------- Input the number of nodes: 3 Input data for node 1 : 10 Input data for node 2 : 20 Input data for node 3 : 30 Return data entered in the list as a string: The linked list: 10 20 30
Flowchart :

C Programming Code Editor:
Previous: Search an element in a Singly Linked List.
Next: Convert a Singly Linked list into a array
What is the difficulty level of this exercise?
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join