Segmentation fault (core dumped) copying form array to string

Question

#include <string.h>
#include <stdio.h>

int main()
{

char str[255] = "Hello;thisnewwolrd";

int i =0;
while(str[i] != ';')
{
   i++;
}
i++;

 char *name = NULL;
 while(str[i] != NULL)
{

  name[i] = str[i];
  i++;
    printf("%c \r\n",name[i]);
 }

}

the expected output is thisnewwolrd but i am getting error of core dumped canany one have reason why and how to over come this

Answer 1

This should work:

int main()
{
    char str[255] = "Hello;thisnewwolrd";
    char *ptr = strchr(str, ';') + 1;

    char name[255];
    strcpy( name, ptr);

    printf("%s \r\n", name);
}

You don't have to reinvent the wheel, and are much better off using standard library functions for string manipulation.