C Language
#include<stdio.h>
#include<conio.h>
void main( )
{
int n, i, j;
clrscr ( );
printf("Enter Number of Lines to be Printed = ");
scanf("%d", & n);
for (i = 1;i < = n; i++)
{
for (j = 1; j < = i; j++)
{
printf("1");
}
printf("\n");
}
getch( );
}
/*OUTPUT*/
Enter Number of Lines to be Printed = 4
1
11
111
1111