Answer è
/* wap to print the series 1,12,123,1234,...*/
#include <stdio.h>
main ( )
{
int i,j;
clrscr ( );
for (i=1; i<6; i++)
printf ("\n");
for (j=1; j<=i; j++)
printf ("%d", j);
}
getch( );
return 0;