If i=1; i<=5++i

Question

Please show a detailed explanation of this program I am new to c++ how is the value be coming 2 and so on

Answer 1

You can increment different values. Let’s modify your code a bit and have it stop at 10, start at 2.

for (int i = 2; i<=10; i += 2){
cout << i << endl;

Now the third part of the loop is:

i += 2

This increments the loop by 2.

Output should now be
2
4
6
8
10

To answer your last sentence, lets change it back to the original one from my previous post, but let’s start at 2

for (int i = 2; i<=5; i++){
cout << i << endl;

The output will now be:
2
3
4
5

Answer 2

This is how a for loop syntax usually looks like. Let me use your numbers.

for (int i= 1; i <= 5; i++)
cout << i << endl;

So let us break down the paranthesis

- int i = 1
This part of the for loop is where the for loop begins, so the loop starts at 1

- i <= 5
This part of the loop is where it stops, so the greatest number of the loop is 5

- i++
This part of the loop is how much the loop increments by, so from 1 it will increment by 1 which gets you 2,3,4 and stops at 5 because of the i<= 5

So your output should be
1
2
3
4
5

Answer 3

Is it a general rule the number assigned to the variable should always be incremented by 1 or can it be more than 1? For ex if i=2 then i++ should be 2+1 or 2+2?

Answer 4

please expain

Answer 5

for (int i = 2; i<=10; i += 2){

i += 2

Output should now be
2
4
6
8
10

The output will now be:
2
3
4
5