char[] and char*

1. char data[] = “data”;
1. data: [D] [A] [T] [A] [\0]
2. so , char data[] is a array holding the data\0
3. the individual characters can be modified
4. but data will always refer to the same storage

 

1. char *data = “data”;
1. [data] –> [D] [A] [T] [A] [\0]
2. so, char *data is a pointing to a string constant
3. the pointer can be modified to point to other location
4. modifying the string constant gives undefined result (SIGSEGV in gcc)