Script - Bitcoin Programming Discussion

Bitcoin Programming 101
#81

2 2 OP_MUL 3 3 OP_MUL OP_ADD
the IDE is a great tool

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#82

My code

3 3 OP_MUL 2 2 OP_MUL OP_ADD

Result is: 0xD.

If my memory does not fails me, i should go FILO, so 1st operator is the 3x3 operation then 2x2 and then summatory. The result is on hexadecimal, so 0xD = 13.

PD: in the wiki it says operators for multiply and division are disabled, it means you cannot do this kind of operations on the mainnet right? why is that?

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#83

2 2 op_mul
3 3 op_mul
op_add

or (playing around)

2 4 op_mul
4 5 op_mul
op_max
10 10 op_add
op_sub
1 op_negate
op_add
op_negate

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#84

2 2 OP_MUL 3 3 OP_MUL OP_ADD (in the script bar)
Then proceed to click the “step” button in the Bitcoin IDE until each calculation has been made which leaves in the stack:
OxD

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#85

answer: 2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#86

3 3 OP_MUL (9)
2 2 OP_MUL (4)
OP_ADD (4 + 9)
= 0xD (13)

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#87

Here’s my ‘Stack Programming Assignment’ answer.
Put the following to the stack: 2 2 OP_MUL 3 3 OP_MUL OP_ADD
And then run, to give the result of 0xD (13 in hexadecimal) as the single element remaining on the stack.

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#88

Stack programming assignment code:
2 2 op_mul 3 3 op_mul op_add

returns 13 decimal (0xD hexidecimal)

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#89

2 2 op_mul
3 3 op_mul
op_add

return 0xD (not sure what D means, but looking at others’ answers it’s 13 in hexadecimal)

#90

2 2 OP_MUL 3 3 OP-MUL OP_ADD

Thanks for all who posted the link to BTC IDE!

#91

I got
2 2 Op_Mul 3 3 Op_Mul Op_Add

I keep getting 0xD not 13? Is 0xD correct? If so why?

#92

I just got an education on hexadecimals via wikipedia. Thank you to everyone who has gone before me on this. I did it correctly, D is the hexadecimal for 13.

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#93

Hi there
2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#94

Answer:
2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#95

This is what I got : 2 2 OP_MUL 3 3 OP_MUL OP_ADD

Result : 0xD

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#96

Answer: 2 2 op_mul 3 3 op_mul op_add

Also for fun: 2 op_dup op_mul 3 op_dup op_mul op_add

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#97

OxD is hexadecimal (or base 16) for 13. In Hexadecimal counting it would go 8…9…A…B…C…D…E…F
and then 10 would be 16 in our standard base 10.

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#98

Here is a website to give you a better understanding for Hexadecimal numbers, Math Is Fun.

Carlos Z.

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#99

Answer
2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#100

Not showing or seeing any Stack Programming Assignment - There is no assignment posted on that lesson page