My code is giving segmentation fault in my machine

#1 
#include<iostream>
#include<cstring>
using namespace std;  
char *mystrtok(char str[],char delim)
{
  //string and single char acts as delimiter
   static char *input =NULL;
   
   if (str!=NULL)
   {
       //we are making a first call
       input=str;
   }
   //check here base case after final token has been returned
   if (input==NULL)
   {
       return NULL;
   }
   
   //start extracting tokens and store them  in a array
   char *output=new char[strlen(input)+1];
   int i=0;
   for (i; input[i]!='\0' ; i++)
   {
      if (input[i]!=delim)
      {
          output[i]=input[i];
      }
      else
      {
          output[i]='\0';
          input=input+i+1;
          return output;
      }
   }
   
   output[i]='\0';
   input=NULL;
   return output;
   
}
int main(){
    char a[100]="Today, is a rainy, day";
    char *ptr=mystrtok(a,' ');
    cout<<ptr<<endl;

     while (ptr!=NULL)
     {
         ptr=mystrtok(NULL,' ');
         cout<<ptr<<endl;
     }
     

    return 0;
}
#2

hello @sagar_aggarwal
image
first print cout<<ptr;
and then call mystrtok.
reason -> value return by mystrtok can be NULL

#3

then first word would be printed twice?

#4

remove that first cout that u have write before while loop

#5

thanks got your point

#6

can you share your whatsapp no. @aman212yadav

#7

i m not much active on whatsapp.

#8

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