C language program for floyd triangle for abcd:
//floyd
triangle with
abcd
#include<stdio.h>]
#include<conio.h>
void
main()
{ int i,j,n,x=64,y=0; /////64 ascii value of a
clrscr();
scanf("%d",&n);
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{
if(i%2==0)
{
printf("%3c",x=x+1);
}
else
{
printf("%3d",y=y+1);
}
}
printf("\n");
}
getch();
}