Character array

#1

what is the difference between char*a and char a[]
why is one used as a parameter in the function?

#2

READ THIS :
char str[] = “Test”;
is an array of five characters, initialized with the value “Test” plus the null terminator ‘\0’.

The second

char *str = “Test”;
is a pointer to the memory location of the literal string “Test”.
sizeof pointer 4.

Both can be used as parameter .