for vs while with same result

For vs While Loop.pde

//Steve Lambert September 20, 2016
//for and while loop demo v1

void setup() {
  size(500,500);
  smooth();

} // end setup

void draw() {
     background(255);
     
     // This is a while loop
    //start with i as 0   
     int i = 0;
    //while i is less than the width of the window  
     while(i < width ){
       line(i,20,i,200);
       //i++; 
       i = i + 10;

     }
     
     
     // This is a for loop
     for(i = 0; i < width; i += 10){
       
       line(i,250,i,450);
       
     } // end for loop

} // end draw