Here some program based on left$ expression

Program to print pattern using LEFT$

CLS

INPUT "Enter a string"; a$

c = LEN(a$)

FOR i = 1 TO c

    PRINT LEFT$(a$, i)

NEXT i

END

Program to print pattern using LEFT$

CLS

INPUT "Enter a string"; a$

FOR i = LEN(a$) TO 1 STEP -1

    PRINT LEFT$(a$, i)

NEXT i

END