WAP in c to generate the following pattern

1
2 4
3 6 9
2 4
1

#include<stdio.h>
#include<stdlib.h>

main()
{
int i,j,k,l;
k=1;l=k-1;

for(i=1;i<=3;i++)
{
l=l+1;
k=l ;               
  for(j=1;j<=i;j++)
    {
    printf("%d",k);
    k=k+i;                                            
    }
printf("\n");
}  

k=2;
l=k+1;
for(i=2;i>=1;i--)
{
l=l-1;
k=l;

for(j=1;j<=i;j++)
{
    printf("%d",k);
    k=k+i;
}                             
printf("\n");
}                                    
      system("pause");

}
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