How to elegantly initialize variables in Class in C++?

Question

class A
{
private:
   int a[100];
public:
   A();
};

Now I want to initialize a with 100 specified value.Except for typing a[i]=XXX in A() , do we have more elegant way?

Answer 1

Use std::fill() , eg:

#include <algorithm>

A::A() {
    std::fill(a, a+100, DesiredValue);
}