Pyramid pattern in c program | to print pyramid | comments with for loop

In this program we are going to learn how to print  triangle in pyramid  pattern in c program using two for loop.so ,Basically there are two types of pyramid
1->Floyd triangle
2->Pascal triangle.

structure for pyramid

                                t
                               t  t
                             t t  t  t
                            t  t  t  t  t
void main ()// source code
{

int i,j,n;
clrscr();
printf("Enter number of lines\n");
scanf("%d",&n);
for(i=1;i<=n;i++)//loop for number of lines
{
 for(j=0;j<40-i;j++) //for printing spaces
{
printf(" ");
}
 for(j=i;j<=2*i-1;j++)//for printing trinagle on left half
 {
 printf("%d",j%10);
}
for(j=2*i-2;j>=i;j--)//for printing triangle on right half
{
printf("%d",j%10);
}
printf("\n");
}
getch();
}

another way also is there

Another pattern  with source code
* * * * *
* * * *
* * *
* *
*
*/

#include<stdio.h>
int main()
{
int i,j,n;

printf("Enter no. of lines: ");
scanf( "%d",&n);


//for loop for number of lines
for(i=n;i>=1;i--)
{

//for printing stars
for(j=1;j<=i;j++)
 {
printf("* ");
 }
 printf("\n");
}
return 0;
}

so , basically we need two for loops .first for loop for printing number of lines .
How many lines do you need .
then after print one simple star we need to give space for that we need third for loop.
After that triagle for left half and right half.

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