Why do we need strdup()?

Question

While I was working on an assignment, I came to know that we should not use assignments such as :

 char *s=\"HELLO WORLD\";

Programs using such

Answer 1

This is a problem in C. Although string literals are char * you can't modify them, so they are effectively const char*.

If you are using gcc, you can use -Wwrite-strings to check if you are using string literals correctly.