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Jul 5th, 2004

Print a Diamond

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My assignment is to write a program that produces a diamond when the user inputs an integer, if the integer is even it should be increased to the next odd number.

if the number is 7, it should print:

___*
__***
_*****
*******
_*****
__***
___*

(Without the underscores.)

So far I am able to produce the following output with the code I have written:

Enter number: 7
3

*
**
***
Press any key to continue

#include <iostream>
using std::cout;
using std::cin;
using std::endl;

int main()
{

int n;

cout<<"Enter number: ";
cin>>n;

cout<<n/2<<endl<<endl;

for(int i=0; i<=n/2; i++){
cout<<" ";

for(int st=1; st<=i; st++)
{
cout<<"*";
}
cout<<endl;
}

return 0;
}

This is an assignment on nested loops, so we're supposed to use 4 for loops. I suspect that there's going to be 2 pairs of nested for loops. Can anyone help me out?

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mrlucky0

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since Jul 2004

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Jul 5th, 2004

Re: Newbie need help on HW

Greetings.
Sorry, I didn't have time to really sit down and think.
Can't get 4 for loops, but I've got a while nested with 3 for loops.
Take it as a reference if you like.
I'll spend some more time to come out with one with 4-For loops. :cheesy:

C++ Syntax (Toggle Plain Text)
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
 
int main()
{
 
     int num, odd, increment, space;
     bool go;
 
     num = 0;
     increment = 1;
     odd = 1;
     go = false;
 
     do{
          cout<<"Enter number: ";
          cin>>num;
     }while(num<3);
 
     if(num%2==0)
          num = num + 1;
 
     while(odd<=num)
     {
          space = num/2 - odd + increment;
          if(go==false)
               increment += 1;
          else
               increment -= 1;
 
          for(int x=0; x<space; x++)
               cout<<" ";
 
          for(x=0; x<odd; x++)
               cout<<"*";
 
          for(x=0; x<space; x++)
               cout<<" ";
          cout<<endl;
 
          if(go==false)
               odd += 2;
          else
               odd -= 2;
          if(odd>num && go==false)
          {
               odd = num - 2;
               increment = num/2;
               go = true;
          }
          if(odd<0)
               odd = num + 1;
     }
 
     return 0;
}
#include <iostream>
using std::cout;
using std::cin;
using std::endl;

int main()
{

     int num, odd, increment, space;
     bool go;

     num = 0;
     increment = 1;
     odd = 1;
     go = false;

     do{
          cout<<"Enter number: ";
          cin>>num;
     }while(num<3);

     if(num%2==0)
          num = num + 1;

     while(odd<=num)
     {
          space = num/2 - odd + increment;
          if(go==false)
               increment += 1;
          else
               increment -= 1;
   
          for(int x=0; x<space; x++)
               cout<<" ";
		
          for(x=0; x<odd; x++)
               cout<<"*";

          for(x=0; x<space; x++)
               cout<<" ";
          cout<<endl;

          if(go==false)
               odd += 2;
          else
               odd -= 2;
          if(odd>num && go==false)
          {
               odd = num - 2;
               increment = num/2;
               go = true;
          }
          if(odd<0)
               odd = num + 1;
     }

     return 0;
}

Hope this helps.

red_evolve

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Posting Whiz

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since Jun 2003

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Jul 6th, 2004

Re: Newbie need help on HW

red_evolve,you really helpful person.
actually my college is having assignment soon and the title is address book system,since i am very fresh in programming,hope can get help from u too...

hope meet you soon

Eddie

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since Jul 2004

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Jul 6th, 2004

Re: Newbie need help on HW

Quote originally posted by Eddie ...

red_evolve,you really helpful person.
actually my college is having assignment soon and the title is address book system,since i am very fresh in programming,hope can get help from u too... hope meet you soon

I agree, thanks for replying. I can't belive you went out of your way to write that code. I'm not sure if I understanding all the logics of it so I'll continue to study it and pursue the 4 for loops method. I've gotten a bit further already.

mrlucky0

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since Jul 2004

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Jul 6th, 2004

Re: Newbie need help on HW

Greetings.
No problemo.
To Eddie,
I'm ready to help as long as you show some effort.

To mrlucky0,
Sorry for being unable to come out with the exact result you wanted. Try to post
what you can get and I'll be sure to help out.

red_evolve

Reputation Points: 53

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Posting Whiz

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313 posts
since Jun 2003

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Jul 7th, 2004

Re: Newbie need help on HW

hi mrlucky0, heres a similar prog.chk this also out.i feel this is quite simple than that of red_evolves.

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n,k,no,i,j,a,b,c;
cout<<"\nenter n:";
cin>>n;
if(n%2==0)
n++;
for(i=1;i<=n;i+=2)
{
for(j=i;j<n;j+=2)
cout<<" ";
for(k=1;k<=i;k++)
cout<<"*";
cout<<"\n";
}
for(i=n-2;i>=1;i-=2)
{
for(j=i;j<n;j+=2)
cout<<" ";
for(k=1;k<=i;k++)
cout<<"*";
cout<<"\n";
}
getch();
}

3maddy3

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Newbie Poster

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7 posts
since Jul 2004

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Jul 11th, 2004

Re: Newbie need help on HW

Yes, I was attempting to write a program similar to that. Looks like you found it. Eventually I was able to figure it out. Here's my rendition, which is not too different. But I swear, I did it on my own!

C++ Syntax (Toggle Plain Text)
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
 
int main()
{
 
	int num, p=1;
 
 
	cout<<"Enter number: ";
	cin>>num;
 
	if(num%2==0)
		num+=1;
 
	int sp=num/2;
 
	for(int i=0; i<=num/2; i++)
	{
		for(int j=0; j<sp; j++)
		{
			cout<<" ";
		}
 
		for(int k=0; k<p; k++)
		{
			cout<<"*";
		}
 
		cout<<endl;
		p+=2;
		sp--;
	}
		sp=1;
		p=num-2;
 
 
	 for(i=0; i<num/2; i++)
	{
		for(int j=0; j<sp; j++)
		{
			cout<<" ";
		}
 
		for(int k=0; k<p; k++)
		{
			cout<<"*";
		}
 
		cout<<endl;
		p-=2;
		sp++;
	}
 
 
return 0;
}
#include <iostream>
using std::cout;
using std::cin;
using std::endl;

int main()
{

	int num, p=1;

	
	cout<<"Enter number: ";
	cin>>num;

	if(num%2==0)
		num+=1;

	int sp=num/2;

	for(int i=0; i<=num/2; i++)
	{
		for(int j=0; j<sp; j++)
		{
			cout<<" ";
		}

		for(int k=0; k<p; k++)
		{
			cout<<"*";
		}

		cout<<endl;
		p+=2;
		sp--;
	}
		sp=1;
		p=num-2;
	
	
	 for(i=0; i<num/2; i++)
	{
		for(int j=0; j<sp; j++)
		{
			cout<<" ";
		}

		for(int k=0; k<p; k++)
		{
			cout<<"*";
		}

		cout<<endl;
		p-=2;
		sp++;
	}


return 0;
}

mrlucky0

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