Need divide special symbol for flash card

[john massey]

M=2=divisor
N=12=dividend
SN001(7)=6

Where does the Log of zero get here? Where did I screw up?

[Weregoose]

I see what it is. Text(1-R,C,M,":",N doesn't work after –30→C. Nonnegative column numbers only!

[john massey]

modified code as requested.

ClrDraw
0→Xmin
94→Xmax
–62→Ymin
0→Ymax
12→R
12→C
LFN001(20)→M
LSN001(1→N
C+4+4int(log({M,N→⌊DIV //problem persists cursor flashes on the STO command
Text(-7-R,⌊DIV(1)+2,"?
Text(1-R,C,M,":",N
Line(Ans(1),R,Ans(1),R-7
Line(Ans(1),R,sum(Ans)-C,R
Text(-7-R,⌊DIV(1)+2,⌊SN001(7)
Disp "EXITING PROGRAM

[ztrumpet]

It will error if M or N equals zero.

[Weregoose]

[john massey]

I want to make the list names work. I have reviewed all of our correspondence. As you can see I have given all the list names a value so you will know what I have done. When the program bombed I checked the values of the variables. R=-4, C=6, M=2, N=12

ClrDraw
0→Xmin
94→Xmax
–62→Ymin
0→Ymax
{5}→⌊RN999
1-⌊RN999(1)→R
{6}→⌊CN999
⌊CN999(1)→C
{2}→⌊FN999
⌊FN999(1)→M
{12}→⌊SN999
⌊SN999(1)→N
(C+4+4int(log({M,N)→⌊DIV//the program bombed here with the cursor sitting on ")"
Text(-7-R,⌊DIV(1)+2,"?
Text(1-R,C,M,":",N
Line(Ans(1),R,Ans(1),R-7
Line(Ans(1),R,sum(Ans)-C,R
Text(-7-R,⌊DIV(1)+2,"6"
Disp "EXITING PROGRAM

[Weregoose]

With those numbers, there cannot possibly be a domain error. Although, I still see a syntax error with those parentheses!

[john massey]

fixed. LDIV yields {10 14} Fixed code

ClrDraw
0→Xmin
94→Xmax
–62→Ymin
0→Ymax
{5}→⌊RN999
1-⌊RN999(1)→R
{6}→⌊CN999
⌊CN999(1)→C
{2}→⌊FN999
⌊FN999(1)→M
{12}→⌊SN999
⌊SN999(1)→N
C+4+4int(log({M,N→⌊DIV
Text(–7-R,⌊DIV(1)+2,"? //DATA TYPE ERR cursor sets after ?
Text(1-R,C,M,":",N
Line(Ans(1),R,Ans(1),R-7
Line(Ans(1),R,sum(Ans)-C,R
Text(-7-R,⌊DIV(1)+2,"6"
Disp "EXITING PROGRAM

[ztrumpet]

It's erroring because -7-R is less than 0.

[john massey]

This code works fine. Only one problem. R controls columns and C controls rows. You will notice that CN is set for "1" and the problem sets tight up against the left side of the screen. You will note that RN is set for "40" and the problem sets about 3/4 down the side of the screen. Do I just reverse R and C in all the print statements?

ClrDraw
ClrList⌊DIV
prgmLAYOUT1
0→Xmin
94→Xmax
–62→Ymin
0→Ymax
{40}→⌊RN999
1-⌊RN999(1)→R
{1}→⌊CN999
⌊CN999(1)→C
{2}→⌊FN999
⌊FN999(1)→M
{12}→⌊SN999
⌊SN999(1)→N
C+4+4int(log({M,N→⌊DIV
Text(–7-R,⌊DIV(1)+2,"?
Text(1-R,C,M,":",N
Line(Ans(1),R,Ans(1),R-7
Line(Ans(1),R,sum(Ans)-C,R
Pause
Text(–7-R,⌊DIV(1)+2,"6"

[Weregoose]

Imagine a library wall containing 63 rows of books. To make your selection, you traverse these up and down, and then sideways. (Rows are stacked on top of each other. Remember that, and you should be fine.)

[john massey]

What ever happened to rows X axes, that is parallel to the top of the screen and Y axis parallel to the side of the screen. Hay, like graph paper on a graph screen.

[john massey]

This a sort of a final report. I decided to use your method of dealing with lines. Since I will need to change that when I get to division. It took me about a day, to make the changes. I then tried to integrate you division code into my big program. I just finished making the changes this morning. Since I will want to change the values of the "I" counter as more divisions occur in the flash cards, I included the code in the program. The code to print the answer is elsewhere in the program. You will notice the reference to FY with R and FX with C. . Old habits die hard. Any way here is the final code. I want to express my heart felt thanks for all your wonderful work. You have been very patient with this 79 year old, with limited skills.

ClrList⌊DIV
1-⌊FY001(20)→R
⌊FX001(20)→C
⌊FN001(20)→M
⌊SN001(20)→N
C+4+4int(log({M,N→⌊DIV
Text(–7-R,⌊DIV(1)+2,"?
Text(1-R,C,M,":",N
Line(Ans(1),R,Ans(1),R-7
Line(Ans(1),R,sum(Ans)-C,R