Private Sub Command1_ClicK()
    'PROGRAM D4R7
    'Driver for routine GAMMQ
    Open "D:\VB常用數(shù)值算法集\DATA\FNCVAL.DAT" For Input As #1
    Do
      Line Input #1, Text$
    Loop While Text$ <> "Incomplete Gamma Function"
    Line Input #1, NVAL$
    NVAL = Val(NVAL$)
    Print Text$
    Print
    Print "     A           X           Actual      GAMMQ(A,X)"
    For I = 1 To NVAL
        Line Input #1, DUM$
        A = Val(Mid(DUM$, 1, 6))
        X = Val(Mid(DUM$, 7, 16))
        Value = Val(Mid(DUM$, 23))
        Print Tab(4); Format$(A, "#0.00");
        Print Tab(14); Format$(X, "#0.####00");
        Print Tab(29); Format$(1 - Value, "0.000000");
        Print Tab(42); Format$(GAMMQ(A, X), "0.000000")
    Next I
    Close #1
End Sub