gistfile1.c

int main (int argc, const char * argv[]) {
	
	char m = 'a';
	char * m2 = &m;		// Assign address of m to m2
	char * m3 = "a";	// Create a new string and assign its starting address to m3
	
	*m2 = 'x';		// OK
	*m3 = 'x';		// EXEC_BAD_ACCESS

	return 0;
}