3.13.txt

vector<int> v1;	// empty vector, default initialized
vector<int> v2(10);	// vector of size 10, elements are default initialized to 0
vector<int> v3(10, 42);	// 10 elements, all with the values of 42
vector<int> v4{10};	// 1 element with the value of 10
vector<int> v5{10, 42};	// 2 elements: 10 and 42
vector<string> v6{10};	// list initializer can't be used : it doesn't contain strings, compiler makes a vector of strings with a size of 10, each element default initialized to an empty string
vector<string> v7{10, "hi"};	// same as before: creates 10 elements of value "hi"