Modifying a C string: access violation [duplicate]

Answer 1

String literals are considered constant.

Answer 2

The correct way of writing your code is:

const char* myString = "5";
*myString = 'e'; // Crash
return 0;

You should always consider adding 'const' in such cases, so it's clear that changing this string may cause unspecified behavior.

Answer 3

*mystring is apparently pointing at read-only static memory. C compilers may allocate string literals in read-only storage, which may not be written to at run time.