#include <iostream>
#include <string.h>
using namespace std;

const char *ptr1 = "modifiable";
const char * const ptr2 = "non modifiable";
char ptr3[] = "a string";

int main() {
	ptr1 = "coucou";
	cout << "ptr1 = " << ptr1 << endl;	
	
	// 1. not possible !!!!
	// error: assignment of read-only variable ‘ptr2’
	ptr2 = "toto";
	// 2. error: invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive]
	strcpy(ptr2, "toto");
	
	strcpy(ptr3, "toto");
	cout << "ptr3 = " << ptr3 << endl;
	
	// 3. will produce overflow and Segmentation fault
	strcpy(ptr3, "totototototototototototo");
	cout << "ptr3 = " << ptr3 << endl;
		
	return 0;
}