Preview:
#include <iostream>

void f(int a = []() { static int b = 1; return b++; }())
{
   std::cout << a;
}

int main()
{
   f();
   f();
}
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter