For loop

The function of For Loop is same as that of while Loop, it is used to iterate a part of the program several times as long as the specified condition returns True. If the number of iteration is fixed, it is recommended to use for loop than other loops. For loop starts with the for keyword and it must include a intilizing variable, condition, increment or decrement.

The only difference between For Loop and While loop is the syntax. In while loop we'll write intializing variable in one line, condition in one line, increment or decrement value in one line whereas in For loop we'll write all those operation in same line.

Syntax
for (Initialization; Condition; Increment or Decrement) {
      //Code to be executed ;
}

CODE

EG 1 . Printing 1 to 5 using For loop

static void Main(string[] args) {
    for (int i=1;i<=5;i++) {
        Console.WriteLine(i);
    }
}

OUTPUT
1
2
3
4
5

CODE EXPLANATION
Function wise for loop is exactly same as that of while loop. Here also first starting variable will be initiated, condition will be checked the moment condition turns True, system directly enter inside For loop and execute whatever code we written inside. Then system will increment i value by 1 and again checks condition. If it turns true again system enter inside for loop and execute code one more time. This will be repeated until the condition turns to false.


EG 2 . Printing 5 to 1 using For loop

static void Main(string[] args) {
    for (int i=5;i>=1;i--) {
        Console.WriteLine(i);
    }
}

OUTPUT
5
4
3
2
1

CODE EXPLANATION
First starting variable will be initiated, condition will be checked the moment condition turns True, system directly enter inside For loop and execute whatever code we written inside. Then system will decrement i value by 1 and again checks condition. If it turns true again system enter inside for loop and execute code one more time. This will be repeated until the condition turns to false.


NOTE
We can create Infinite for loop, The syntax for creating Infinite for loop is as follows
    for( ; ; ){
        //Code to be executed ;
    }

Exercises
1. Print first 50 even numbers using for loop.
2. Find the sum of first 500 natural numbers using for loop.


(Click Here, For more exercises)