#include <stdio.h>
int h = 1;
main()
{
    printf("%d\n", h+1);
}

#include <iostream>
using namespace std;
long double n1, n2, answer;
char m;

int main() {
 cout << "method (+, -, *, /)? ";
 cin >> m;
 if (m == '+') {
  cout << "addend? ";
  cin >> n1;
  cout << "addend? ";
  cin >> n2;
  (answer = n1 + n2);
  cout << "sum = " << answer << "\n";
 }
 else if (m == '-') {
  cout << "number? ";
  cin >> n1;
  cout << "number? ";
  cin >> n2;
  (answer = n1 - n2);
  cout << "answer = " << answer << "\n";
 }
 else if (m == '*') {
  cout << "factor? ";
  cin >> n1;

$h = 1 # look ma, I'm using global variables!
puts "%d" % $h + 1

whitespace = ? white space characters ? ;
all characters = ? all visible characters ? ;
digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;

unescaped string characters = all characters - '"' ;

unescaped literal characters = all characters - "'" ;

escape character = "\\" ;

string escape = escape character, '"' ;

character literal escape = escape character, "'" ;

string characters = unescaped string characters | string escape ;

character literal characters = unescaped literal characters | character literal escape ;