I. LET is used to assign a value to a variable. It is the only optional statement used in q basic programming.
For example,
LET A=12
LET A$="KATHMANDU"
II. INPUT Is used to enter value without any message on the screen.
For example,
INPUT name$,roll
INPUT"enter a name:";name$
III. PRINT is used to display the result or output of the program on the screen.
For example,
PRINT name$,roll
PRINT"name=";name$
IV. END is used to terminate or end a program.