can any one tell me the code of different types of pyramid...please

Answer 1

http://www.programiz.com/cpp-programming/examples/pyramid-pattern

For example,

#include <iostream>
using namespace std;
int main()
{
int i,space,rows,k=0;
cout << "Enter the number of rows: ";
cin >> rows;
for(i=1;i<=rows;++i)
{
for(space=1;space<=rows-i;++space)
{
cout << " ";
}
while(k!=2*i-1)
{
cout << "* ";
++k;
}
k=0;
cout << endl;
}
return 0;
}

or

#include <iostream>
using namespace std;
int main()
{
int i,j,rows;
cout << "Enter the number of rows: ";
cin >> rows;
for(i=1;i<=rows;++i)
{
for(j=1;j<=i;++j)
{
cout << "* ";
}
cout << endl;
}
return 0;
}

Answer 2

#include<iostream>
using namespace std;
int main()
{
int i,n,j,l,k=1;
cout<<"How many rows?";
cin>>n;
i=n;
while( i>=0 && K<=n+1)
{
l=1;
j=1;
while(j<=i)
{
cout<<" ";
j++;
}
while(l<=K)
{
cout<<"* ";
l++;
}
cout<<endl;
I--;
K++;
}
return 0;
}

Answer 3

it is very important to understand the logic behind it.
it's that the first triangle pointing downwards should be of spaces .
then a normal triangle of stars should be printed.
but, if we take two different for loops for these two triangles,then,the second triangle will get printed after first.
hence, it's more convenient to take while loop using && operator