While Loop: Pre-Tested Loop

While Loop Pre Tested Loop Sourav Purkait 2


While loop is a a pre-test loop, it first test a special conditional expression and as long as conditional expression is true , loop body statement will be executed.


while (condition)





Flow chart:

Step 1: In the execution flow, first initialized the value.

Step 2: After initialized the value it checked the condition. If the condition is true then the block of code executed. Then it increments or decrement the value of initialized variable. 

Step 3: Repeat step 2 until the condition is false.

Step 4: If the condition is false then stop the execution of statement and it executed outside of the loop.



int main()


      int i = 0;

      while ( i <=10 )


            Printf(“%d  “,i );




Output: 0 1 2 3 4 5 6 7 8 9 10


For loop is used when we don’t know the number of iterations. Using while loops, we do not need to write the same code again and again.


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