design part 3

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To make this program you may use following code -

‪#‎include‬<stdio.h>
#include<conio.h>

void main()
{int n,i,j,s;
printf("enter line number = ");
scanf("%d",&n);
s=1;
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{printf("%d",s);
s++;
}
printf("\n");
}
getch();
return;
}

try out this..............