Thread: is curly braces here is a must?

Hello,
is the following:

Code:

for ( i = 1 ; i < 5 ; i++)
      if (x == 1)
          y = 5 * x;

(Without curly braces)

the same as:

Code:

for ( i = 1 ; i < 5 ; i++)
      {
             if (x == 1)
                 y = 5 * x;
      }

(With curly braces)?

Thank you.