如何用qbasic打乘法表和输出闰年

九九乘法表：
Cls
For a = 1 To 9
For b = 1 To a
Print a ; " × " ; b ; " = " ; a * b ; Space(4);
Next b
Print
Next a
End

九九乘法表

FOR I=1 TO 9
FOR J=1 TO I
PRINT LIRIM$(STR$(J));"*"LTRIM$(STR$(I));"=";LTRIM$(STR$(J*I);TAB(8*J);
NEXT J
NEXT I
END

调试过的保证正确