For Loop:

The most common used loop in every programming language.
It's easy and straight.
the Syntax of The loop is as follows

for ( init-expression ; cond-expression ; loop-expression)

for example

for (int i = 0 ; i<=10; i++)
{

Code Block

}

in this loop

      i = 0;  is init-expression

      i<=10; is cond-expression
   and 
    i++ is loop-expression

Detail:

i=0; or init-expression:

                        i=0; or init-expression tells for loop where to start, in this case the initial value of i is 0

i<=10 or Cond-Expression:

                             i<=10 or Cond-Expression tells the compiler that the maximum lift of Loop is 10 if i goes to the value of 10 you should stoop executing the loop.

i++ or Loop expression:

                         i++ or Loop expression tells compiler that how much increment you made in every cycle, in this case value of i is increasing by one each time until its reaches to 10.