Why am i getting segmentation fault in deleting node?

node * del(node * start,int loc)

int l=len(start);
if(loc<1


This is the function and I am calling it from main() as:

case 5:
printf("Enter the node you want to delete. n");
scanf("%d",temp);
start=del(start,temp);
break;


While deleting any node I am getting segmentation fault!I am stuck at this .
Can anyone help?

here is the full program:-

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

struct Node

int data;
struct Node * next;
;

typedef struct Node node;

int len(node * start)

if(start==NULL)
return 0;
int c=1;
while(start!=NULL)

start=start->next;
c++;

return c;

node * insert(node* start,int loc,int d)

int l=len(start);
node * p=start;
node * temp=(node*)malloc(sizeof(node));
if(loc<1
void show(node *start)

int l=len(start);
if(l==0)

printf("Nothing to print. n");

else

for(int i=1;i<l-1;i++)

printf(" %d -> ",start->data);
start=start->next;

printf(" %d n",start->data);


node * destroy(node * start)

node * p=start;
while(start!=NULL)

start=start->next;
free(p);
p=start;

printf("Destroy of linked list completed! .n");
return NULL;

node * del(node * start,int loc)

int l=len(start);
if(loc<1
int main()

node * start=NULL;
int ch,temp,d;
ch=temp=d=0;
while(ch != -1)

switch(ch)

case 0:
printf("Enter 0 to show menu.n");
printf("Enter 1 to create linked list.n");
printf("Enter 2 to destroy linked list.n");
printf("Enter 3 to get the length of likned list.n");
printf("Enter 4 to insert element in the linked list.n");
printf("Enter 5 to delete element from the linked list.n");
printf("Enter 6 to view the linked list.n");
printf("Enter 7 to reverse a linked list.n");
break;

case 1:
printf("Enter the size of link list to begin with.n");
scanf("%d",&temp);
for(int i=1;i<=temp;i++)

printf("Enter the data to bes inserted to node %d .n",i);
scanf("%d",&d);
start=insert(start,i,d);

break;

case 2:
start=destroy(start);
break;

case 3:
printf("Size of linked list is: %d n",len(start));
break;

case 4:
printf("Enter the location where you want to insert the data.n");
scanf("%d",&temp);
printf("Enter the data to be intered.n");
scanf("%d",&d);
start=insert(start,temp,d);
break;

case 5:
printf("Enter the node you want to delete. n");
scanf("%d",temp);
start=del(start,temp);
break;

case 6:
show(start);
break;

default:
ch=0;
break;

printf("nEnter your choice? n");
scanf("%d",&ch);

destroy(start);





if(loc<1 || loc>l)

loc

loc

1 Answer
1

Change:

case 5:
printf("Enter the node you want to delete. n");
scanf("%d",temp);
start=del(start,temp);
break;


line scanf("%d",temp); to scanf("%d",&temp);

scanf("%d",temp);

scanf("%d",&temp);

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