What is the output of the following code?

#include iostream

void myFunction$($ int a $)$;

using namespace std;

int main$()$

$\{$

int input $=10$;

myFunction$($input$)$;

cout $<<$ input ;

return $0$;

$\}$

void myFunction$($ int a $)$

$\{$

a $+=10$;

$\}$