Program to create Pyramid of Numbers in C

#include 
 #include 

 int pyramid( int length )
 {
 int line = 1;
 int j = 1, i, k = length;

 while( length-- ) 
{

  if( j == 1 ) {
   for( i = 1; i <= length + 5; i++ )
    printf( " " );
   printf( "%d", j++ );
   k--;
   line++;
  }

  else if( i % 2 ){
   for( i = 1; i <= length + 5; i++ )
    printf( " " );
   for( i = 1; i <= line; i++ )
    printf( "%d ", ( j++ % 10 ) );
   printf( " " );
   line++;
   k--;
  }

  else {
   for( i = 1; i <= length + 5    ; i++ )
    printf( " " );
   for( i = 1; i <= line; i++ )
    printf( "%d ", ( j++ % 10 ) );
   printf( " " );
   line++;
   k--;
  }
 }

    return 0;
 }

 int main( )
 {
 int length;

 printf( "Enter the list length " );
 scanf( "%d", &length );

 pyramid( length );
 getch( );
 return 0;
 }