Different between for loop and foreach loop.

Question

how do work ? define that.

Answer 1

C++

for (init; check; inc) ...

equals

init;
while (check)
{
...
inc;
}

A foreach loop is more specialised than the for loop and it goes through each element of a data structure.

Answer 2

for loops just increment ot decrement a counter by a set amount each iteration.
a foreach loop takes a data array or object and on each loop gives you access to the key value pair for each element in the structure. you can do that with a for loop but a foreach makes it easier.
I
for (var i = 0; I < array.length; i++) {
//array[i].key returns value for that key in an array of objects
}

Answer 3

In Python, a for loop is kind of like a foreach loop in other languages: it iterates over an object