This article is from solution of Let Us C by Yashwant Kanetkar. I also posted many another articles regarding solutions of Let Us C. If you have any problem regarding solution then give comment, I will surely reply your question.
Q. Write a program to produce the following output:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int lines, n=1, spaces, tabs=8, x, y=1;
for(lines=1;lines<=5;lines++)
{
for(spaces=1;spaces<=tabs;spaces++)
printf(" ");
printf("%4d",n);
if(lines>=3)
{
for(x=1;x<=y;x++)
{
if(x==2&&y==3)
printf("%4d",lines+1);
else
printf("%4d",lines-1);
}
y++;
}
if(lines>=2)
printf("%4d",n);
tabs=tabs-2;
printf("\n");
}
getch();
}
