{ For Loop } Why it is so tricky and confusing. Can some one give a simple explanation.

Question

for loop explanation

Answer 1

int i = 0;
while(i < 10)
{
// code
++i
}

is (almost) the same as:

for(int i = 0; i < 10; ++i)
{
//code
}

The variable i in the for loop is a local variable in this example, which means that it gets "deleted" when the loop ends. The variable i declared before the while loop will stay.

Answer 2

Chris is right on the mark with it. The FOR loop was created to simplify the WHILE loop structure that he posted as an example. Use a FOR loop when you've got some means of establishing the end condition. Use a WHILE loop when you're uncertain of the amount of iterations that'll take place.

SYNTAX:
for( <counter variable> ; <condition to break loop>; <increment counter variable)

Answer 3

Jakob and Chris already gave good explanations, but here is a code I made for someone else who asked a similar question today. I tried to use the output to explain whats happening. Keep in mind that this made the code a bit confusing for beginners. Use the original code as reference and the output of the modified code as explanation.

https://code.sololearn.com/cxd0BagAnSfC/?ref=app