Do While and While Loop C/C++ Help

Do While and While Loop Assignment Help

Difference between do while and while loop?

Loop in programming is set of instructions that performs sequentially and repeated until certain condition is matched. There are different loops in programming languages for loop, do while loop and while loop.

The while loop is most basic loop of programming languages. Working of while loop define as first it can check the certain condition, The condition used in while loop is an expression of Boolean type which returns true or false.

If the condition verify means that it return true for the given condition then compiler move into the body of while loop and execute the instructions of body of loop until conditions becomes false. The body of while loop consists of instructions either a single line instruction or set of instructions to execute.

The body of while loop iterates till the given condition is true and when condition becomes false the body of while loop not execute means the while loop is terminated.

It is similar to the “for loop” of programming language which first verify the given condition and then execute the instruction of the body.

As we see that in while loop, if a certain condition becomes false in its first iteration then the body of while loop not executes. But in do-while loop the first iteration is always true and execute the body of do-while loop one time must then check the given condition.

The working functionality of do-while is define as that it first implement the loop body then check the given conditions either it returns true or false.

Similar to while loop the body may contain single instruction or set of instruction to execute and condition type is also Boolean, true or false. First control of compiler execute the set of instruction or single instruction of body then control passes to condition statement of do-while loop which checks the condition and iterate the instruction of body again of it returns true, and if it returns false by the given condition then the loop terminates and execute next instructions of program.

Both loops, while and do-while loop of programming language are iterated set of instructions which execute based on the given condition.

If first we required to verify the condition then execute instructions then we have to use while loop and if we required the instructions to execute once then we have to use do-while loop in our program.

Posted on November 2, 2019 in Uncategorized

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