For ( int i=1,i<=4,i++) For (int j=1,j<=i,j++)

Question

Print ("*") I know but how comes explain me in details friend i have always confused in nested loop what is rule for condition in nested for loop
*
**
***
****
Output this * print but i am still confused explain me details

Answer 1

for(int i=1; i<=4; i++)
runs four times. `i` goes from 1 to 4.

for(int j=1; j<=i; i++)
runs `i` times.

So the inner loop looks like this, step by step:

for( i is currently 1 )
for(int j = 1; j <= 1; j++)

...then

for( i is currently 2 )
for(int j = 1; j <= 2; j++)

...then

for( i is currently 3 )
for(int j = 1; j <= 3; j++)

...then

for( i is currently 4 )
for(int j = 1; j <= 4; j++)

and we are done.

Answer 2

Thankx Schindlabua buddy

Answer 3

Dharmesh Shukla Not sure I understand?

Answer 4

In nested for loop when condition is false Schindlabua

Answer 5

But in second condition j =1 , J<=2 , but here 2 greater than 1 so it's is false condition.. How will it's goes on continue looping Schindlabua explain..!!

Answer 6

j <= 2 is true, because j == 1:

1 <= 2. One is in fact smaller than 2 :)

The for loop is doing this, step by step:

1. j = 1
2. print "*"
3. j++
4. if j <= i go to step 2, else continue
5. we stop.

So, for example, in the 3rd iteration (i == 3):

1. j = 1
2. print "*"
3. j++ // j is 2
4. j is smaller or equal than 3, goto step 2
2. print "*"
3. j++ // j is 3
4. j is smaller or equal than 3, goto step 2
2. print "*"
3. j++ // j is 4
4. j is bigger than 3
5. we stop.