1 2 3 4 5 4 3 2 1         
      2 3 4 5 4 3 2
         3 4 5 4 3
            4 5 4
               5

#include <iostream.h> 
 
void main()
{ 
 
int a=10; 
int n,i,j=0,k; 
 
cout<<"Enter the value for n: "; 
cin>>n; 
k=n; 
 
for (i=0 ;i < 10; i++) 
a[I]=i + 1; [/I]
 
[I]while(k>0){ [/I]
[I]for(i=(0+j);i<n;i++) [/I]
[I]cout<<a[I]<<" "; [/I]
[I]for(i=n-2;i>=(0+j);i--) [/I]
[I]cout<<a[I]<<" "; [/I]
[I]cout<<endl; [/I]
[I]j++; [/I]
[I]for(i=0;i<j;i++) [/I]
[I]cout<<" "; [/I]
[I]k--; [/I]
[I]} [/I]
[/I][/I]

int main()
{
int num, fact = 6,temp =1,i ,j;
cout<<"Enter a factorial ";
cin>>num;
 
for(i=2;i<=num;i++)
fact=0;
{for(j=1;j<=1;j++)-------said code dosnt have effect
fact=fact+temp;
temp=fact;
}
}

#include <iostream.h> 
 
//use int main(), not void main()
void main()
{ 
  int a = 10; 
  int n, i, j=0, k; 
 
  cout << "Enter the value for n: "; 
  cin >> n; 
  k=n; 
 
  //overwrite the value of a 10 times
  for (i = 0; i < 10; i++) 
     a = i + 1; 
 
  /*a now equals 10.  Since a never changes for the rest of the program it will be 10 for the rest of the program.*/
 
  while(k > 0) //control number of lines
  { 
     //General flow:
     //each line will have three sections
        //initially is a series of spaces
        //in the middle is a series of numbers
        //int the end is a series of numbers
 
     //zero plus any number is always the number so drop the zeros
 
     //on the middle part of the line display a and a space n - j times  
     for(i = (0 + j); i < n; i++) 
        cout << a << " "; 
 
     //at the end of the line display a plus a space n - 2 - j times
     for(i = n - 2; i >= (0 + j); i--) 
        cout << a << " "; 
 
     //start a new line
     cout<<endl; 
 
     j++;
 
     //display j spaces initially on the new line
     for(i = 0; i < j; i++) 
        cout << " "; 
 
     k--; 
}

int main()
{
  int num, fact = 6, temp =1, i , j;  //initialize fact to 1.
  cout<<"Enter a factorial ";
  cin>>num;
 
for(i = 2; i <= num; i++)
  fact=0;  /*don't reset fact to zero every time.  fact is ever increasing each time through the inner loop.  It should be the same as the current number, not zero each time the inner loop starts.  You can figure out what variable represents the current number*/
 
//here's one of those errors from not indenting properly.
{
  for(j = 1; j <= 1; j++)-------said code doesnt   have effect---because the { should be right after the first for loop, not where it is.
 
  /*this loop controls how many times the current number is added to itself to get the current factorial.  the terminating condition is wrong as written, you need the prior factorial repeats.  I'll let you figure out which variable in your code represents the prior factorial.*/
 
 
 
     fact=fact+temp; //you're adding the wrong value each time through the loop.  
 
     temp=fact; //this should be outside the inner loop
  }
}

 #include <iostream>
using namespace std;
int main()
{
    int num;
    cout<<"Enter a factorial ";
    cin>>num;
    for(int line=1;line<=num;line++){
            int list=line;
        for(int temp1=1;temp1<list;temp1++){
                cout<<' ';
        }
        for(int temp2=list;temp2<num;temp2++)
        cout<<temp2;
        for(int temp3=num;temp3>=list;temp3--)
        cout<<temp3;
 
        cout<<endl;
 
    }
}