Question

I am C++ programmer and in C++ I used some thing that I want
corresponding those things in Ruby.
please help me.

In C++ , I can write thess program but in Ruby I can’t:

1 –

  int i,x;
  int sum=0;
  for( x=0 ; x <= 50 ; x++ ) {
      cin >> i;
      sum = sum + ( x + i ) ;
  }
  cout << sum;

2 –

int a,b,c,d;
    while( 1 ) {
       cin >> a >> b >> c >>d ;
       if( a < 0 || b < 0 )
          break;
       cout << a << " " << b << " " << c << " " << d << endl;
    }

thanks.

Answer 1

Why not?

1.

sum = 0
0.upto(49) {|x| sum += gets.chomp.to_i}
puts sum

2.

begin
  a,b,c,d = gets.chomp.to_i,gets.chomp.to_i,gets.chomp.to_i,gets.chomp.to_i
end until(a<0 or b<0)
puts "#{a} #{b} #{c} #{d}"