// a pattern like right angle triangle with number increased by 1//
#include<stdio.h>
int main()
{
int i,j,n,no=0;
printf("Enter any number :");
scanf("%d",&n);

for(i=1; i <= n ;i++)
    {
    for(j=1;j<=i;j++)
    {
        no++;
  printf("%d",no);
    }
  printf("\n");

}
return 0;
}