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Views: 2342 | Replies: 6
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Join Date: Aug 2004
Posts: 7
Reputation:
Rep Power: 0
Solved Threads: 0
I am having a problem regarding nesting loops.for example
for(int x=1;x<10;x++){
for(int y=1;y<x;y++)
i want to know what this statement means. I posted a question to the forum but the moderator has unfortunately taken it off. I need some help regarding the concepts of the program given below.just give me a rough idea in how to do it,
******
*****
****
***
**
*
for(int x=1;x<10;x++){
for(int y=1;y<x;y++)
i want to know what this statement means. I posted a question to the forum but the moderator has unfortunately taken it off. I need some help regarding the concepts of the program given below.just give me a rough idea in how to do it,
******
*****
****
***
**
*
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Join Date: Dec 2003
Location: Nashville, TN
Posts: 2,333
Reputation:
Rep Power: 11
Solved Threads: 102
Kalinga,
The reason I deleted your other threads is because your question is obviously a homework question and you posted no code of your own for us to critique.
I'll leave this thread open on one condition: Post code that you've written, including the part that you're hung up on. Ask specifically what you're not getting, and someone will try to help. Even if the code's completely wrong, someone will try and point you in the right direction.
We're trying to take a tough stance on people just asking us to do their homework. We don't want the reputation that we'll do people's homework-- we're a help site, not a cheat site.
The reason I deleted your other threads is because your question is obviously a homework question and you posted no code of your own for us to critique.
I'll leave this thread open on one condition: Post code that you've written, including the part that you're hung up on. Ask specifically what you're not getting, and someone will try to help. Even if the code's completely wrong, someone will try and point you in the right direction.
We're trying to take a tough stance on people just asking us to do their homework. We don't want the reputation that we'll do people's homework-- we're a help site, not a cheat site.
Alex Cavnar, aka alc6379
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Join Date: Aug 2004
Posts: 7
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i will post the code for the above question.but it does not work
#include<iostream.h>
int main()
{
for(int x=1;x<10;x++){
for(int y=1;y<10;y++){
cout<<"*";
cout<<"\n";
}
for(int z=y-1;z>=y;z--){
cout<<" ";
cout<<"\n";
}
for(x=z;x>z;x++){
cout<<"*";
}
cout<<endl;
return 0;
}
please check the coding and let me know whats wrong with it.thanks..
kalinga.............
#include<iostream.h>
int main()
{
for(int x=1;x<10;x++){
for(int y=1;y<10;y++){
cout<<"*";
cout<<"\n";
}
for(int z=y-1;z>=y;z--){
cout<<" ";
cout<<"\n";
}
for(x=z;x>z;x++){
cout<<"*";
}
cout<<endl;
return 0;
}
please check the coding and let me know whats wrong with it.thanks..
kalinga.............
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Join Date: Aug 2004
Posts: 7
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there is a problem regarding the following program..i mean my coding does not work with it..i will post the program and the coding for it.can anyone of you tell me whats wrong with it.thanks.....
**********
*********
********
*******
******
*****
****
***
**
*
---------------------------------------------
coding
--------------------------------------------
i will post the code for the above question.but it does not work
#include<iostream.h>
int main()
{
for(int x=1;x<10;x++){
for(int y=1;y<10;y++){
cout<<"*";
cout<<"\n";
}
for(int z=y-1;z>=y;z--){
cout<<" ";
cout<<"\n";
}
for(x=z;x>z;x++){
cout<<"*";
}
cout<<endl;
return 0;
}
posted by--(kalinga)
------------------------------------------------
**********
*********
********
*******
******
*****
****
***
**
*
---------------------------------------------
coding
--------------------------------------------
i will post the code for the above question.but it does not work
#include<iostream.h>
int main()
{
for(int x=1;x<10;x++){
for(int y=1;y<10;y++){
cout<<"*";
cout<<"\n";
}
for(int z=y-1;z>=y;z--){
cout<<" ";
cout<<"\n";
}
for(x=z;x>z;x++){
cout<<"*";
}
cout<<endl;
return 0;
}
posted by--(kalinga)
------------------------------------------------
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Join Date: Jun 2004
Location: Marin, CA, USA
Posts: 434
Reputation:
Rep Power: 5
Solved Threads: 10
Thanks for the code! That helps!
So your code is saying:
So you get 81 lines with one asterisk.
From what you want to print out, it looks like you want something more like this:
So your code is pretty close, but here are a few ideas:
First, This line:
for (int x = 1; x < 10; x++)
does the following code 9 times, not 10. Why? because the FIRST time is 1 and it stops when i is LESS THAN 10, so it does 1..9.
Mostly folks in c/c++ do loops starting with 0, but you could also just say '<=', so either of these will give you 10 iterations:
for (int x = 0; x < 10; x++) // 0..9
for (int x = 1; x <= 10; x++) // 1..10
Second, the second loop should probably do one fewer iterations each time. A simple way to do that here would be to loop one less time than x:
for (int y = x; y < 10; y++) // will do 10 the first time, 9 the second, etc
Third, you want to print '*' for each y iteration, and THEN print the new line:
I'm not sure what the rest of the code is trying to accomplish, but maybe this will get you going in the right direction.
Good luck!
So your code is saying:
Nine times,
Nine times,
print a '*' followed by a new lineFrom what you want to print out, it looks like you want something more like this:
Ten times,
print 10,9,8,7,... '*', followed by a new lineFirst, This line:
for (int x = 1; x < 10; x++)
does the following code 9 times, not 10. Why? because the FIRST time is 1 and it stops when i is LESS THAN 10, so it does 1..9.
Mostly folks in c/c++ do loops starting with 0, but you could also just say '<=', so either of these will give you 10 iterations:
for (int x = 0; x < 10; x++) // 0..9
for (int x = 1; x <= 10; x++) // 1..10
Second, the second loop should probably do one fewer iterations each time. A simple way to do that here would be to loop one less time than x:
for (int y = x; y < 10; y++) // will do 10 the first time, 9 the second, etc
Third, you want to print '*' for each y iteration, and THEN print the new line:
for x
{
for y
{
}
print new line here
}I'm not sure what the rest of the code is trying to accomplish, but maybe this will get you going in the right direction.
Good luck!
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