How is While/Do while different from For?

Question

C++ / C#

Hello, I am a beginner programmer. C++ is the first language I started learning. Please tell me how While and Do While differ from For.

Answer 1

The difference is only at the syntax level, just for is a special case of while:

int counter = start;
while(condition(counter)) {
   //...
   after(&counter);
}

against

for(int counter = start; condition(counter); after(&counter)) {
  //...
}

Answer 2

for (;;) {}- loop with precondition
while () {}- loop with precondition. - loop with postcondition.
do {} while ()