C while loop and flowchart

In this tutorial, You learn about while loop in c programming, understand how while logic works to run a looping statement successfully. In the previous tutorial, we learned about for loop. 

I think you know that a loop or iterative function is used to repeat the block of statements until the given test expression or test condition return false. and while loop also uses for the same work but it is also known as the entry control loop.

While Loop in C

Steps for while loop processing are

It contains three simple while loop processing steps are 

  1. Variable Initialization
  2. Test Expression or Condition
  3. Variable Increment/Decrement
I will explain all these processing steps in syntax. so, you understand each.

C While Loop Syntax 

Below I shared while loop syntax and flowchart

variable initialization //eg. i=1;
while( test expression ) {
     //All Statements
     // Variable Increment/Decrement eg. i++;       
}

While loop flowchart

Here I shared while loop flowchart 



while loop flowchart
while loop flowchart

Example while loop

I share an example of print a series of the number below to understand while loop


#include<stdio.h>
int main() {
int n;
printf("Enter a number ");
scanf("%d",&n);
int count=1;                //variable initialization
while( count<=n ) {    //test expression
printf("%d\n",count);
count++;                      // variable increment
}
return 0;
}

When the above code is compiled and executed, it produces the following output 


Enter a number: 5
1
2
3
4
5

In this tutorial, You learn about while loop in c and flowchart in the next tutorial learn do while loop in c. 

Happy Coding ๐Ÿ˜Š

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