What will those strings print out?

[mickey2005]

1. What will print out?
2. main()

3. {

4. char *p1="name";

5. char *p2;

6. p2=(char*)malloc(20);

7. memset (p2, 0, 20);

8. while(*p2++ = *p1++);

9. printf("%s\n",p2);

10. }

Answer:empty string.

 

[raj_rohit10]

Re: what will print out?

but it should print the "name"

 

[abhishek_elec]

Re: what will print out?

At the end of the code, p2 points to NULL character (as while loop increments p2 and runs till *p2 == 0). As soon as p2 points to NULL , while loop exits.
So while printing it prints NULL string.

 

[swapgo]

Re: what will print out?

Hai,

The s2 pointer should reach its original address.
You should substract the number of locations incremented.
After substracting you get what you desired.

Regards
Gopi