Hello;

i wrote this code for a star triangle , but it told me it contains some errors , Do any 1 can help me plz ?

it should be like this :

``````*******
*****
***
*``````
``````include <iostream>
#include<cmath>
using namespace std;
int main()
{   int n=4;
for ( int i=n;i>0;i--)
{for (int space=i; space <n; space++)
{cout<<" ";
for (int j=1;j<=(2i-1); j++)
cout<<"*";}
cout<<endl;
return 0;
}``````
``````#include <iostream>
#include<cmath>
using namespace std;
int main()
{
int n=4;
for ( int i=n;i>0;i--)
{
for (int space=i; space <n; space++)
{
cout<<" ";
for (int j=1;j<=(2*i-1); j++)
cout<<"*";
}
cout<<endl;
}
return 0;

}
``````

well i removed the errors but it outputs nothing.. do check ur logic again

``````#include <iostream>
#include<cmath>
using namespace std;
int main()
{

for(int i=0; (i < 7); i++)
{
cout << "*";
}

cout << "\n ";

for(int i=0; (i < 5); i++)
{
cout << "*";
}

cout << "\n  ";
for(int i=0; (i < 3); i++)
{
cout << "*";
}

cout << "\n   ";
cout << "*";
return EXIT_SUCCESS;
}``````
``````#include <iostream>
#include<cmath>
using namespace std;
int main()
{
int n=4;
for ( int i=n;i>0;i--)
{
for (int space=i; space <n; space++)
{
cout<<" ";
for (int j=1;j<=(2*i-1); j++)
cout<<"*";
}
cout<<endl;
}
return 0;

}
``````

well i removed the errors but it outputs nothing.. do check ur logic again

yaa, it dose not print any thing !
i do not where is the wrong logical statement their .

``````#include <iostream>
#include<cmath>
using namespace std;
int main()
{

for(int i=0; (i < 7); i++)
{
cout << "*";
}

cout << "\n ";

for(int i=0; (i < 5); i++)
{
cout << "*";
}

cout << "\n  ";
for(int i=0; (i < 3); i++)
{
cout << "*";
}

cout << "\n   ";
cout << "*";
return EXIT_SUCCESS;
}``````

thanks , but it should be written using the same logic or style that i had post it !

any help !

If you go back to your original design,

``````#include <iostream>
#include<cmath>
using namespace std;
int main()
{
int n=4;
for ( int i=n;i>0;i--)
{
for (int space=i; space <n; space++)
{
cout<<" ";
for (int j=1;j<=(2*i-1); j++)
cout<<"*";
}
cout<<endl;
}
return 0;
}``````

and modify it, it is a viable approach (sort of). First off, you want to move the for() loop that writes the asterisks out of the spacing loop. Second, try making i = 8 to start, and instead of decrementing by one, decrement by 2.

``for (int i = 2 * n; i > 0; i -= 2)``

You'll need to adjust the spacing loop accordingly.

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