Curly brackets after for statement

Question

I\'m a newbie. Wrote a code to print sum of number from 1 to 10. Here\'s what happened;

for(a = 1; a<=10; a++)
sum += a;
cout<

<

Answer 1

If you break apart that big number:

1 3 6 10 15 21 28 36 45 55

you can see what's happening - it's actually outputting the accumulated sum after every addition, because your cout is within the loop. It's just hard to see because you have no separator between all those numbers.

You'll see the difference if you format your code properly:

for(a = 1; a<=10; a++)
    sum += a;             // Done for each loop iteration
cout<