Script - Bitcoin Programming Discussion

Bitcoin Programming 101
#121

My answer :slight_smile:
2 2 op_mul 3 3 op_mul op_add

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#122

answer is 0xD
2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#123

stack programming assignment solution: 2 2 OP_MUL 3 3 OP_MUL OP_ADD

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#124

I came up with the same answer. but my execution in the stack was 0xD ?

#125

This is correct, the stack displays variables in HEX format where D = 13 :slight_smile:

2 Likes
#126

Done.
2 2 op_mul 3 3 op_mul OP_ADD
The result, D, is hex format for 13 as said before.
Starts making fun! :slight_smile:

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#127

Answer Script:
2 2 op_mul 3 3 op_mul op_add

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#128

Hi all, here’s my solution for the Stack Programming assignment (OP_MUL and OP_ADD).

2 2 OP_MUL
3 3 OP_MUL
OP_ADD
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#129

2 2 op_mul 3 3 op_mul op_add

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#130

2 2 op_mul #places 22 = 4 onto the stack
3 3 op_mul #places 33 = 6 onto the stack
op_add #adds the two items on the stack to make 13 or d

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#131

2 2 OP_MUL
2 1 op_substr
2 2 op_add
1 2 op_substr
op_add

0xD

is this right ?? i still got 0xD i messed around till i got 0xD but i see other have 2 2 op_mul 3 3 op_mul then they op_add …

#132

Unfortunately this is incorrect, you must multiply twice and then add the results of multiplications together.
OP_SUBSTR returns a substring and is not useful in your example. :slight_smile:

#133

Hi everyone. I recently finished the javascript for beginners course.

Would anyone be able to advise me on the following;

Would moving straight into the bitcoin programming 101 be too advanced at my current stage?

Does the Bitcoin programming 101 course teach how to build on the Bitcoin SV blockchain? Is it the same language?

Thanks in advance for anyone who can help

#134

Depends on your knowledge, you can always try out and if you get stuck you can go check Blockchain and Bitcoin 101 and go back when you’re ready :slight_smile:

Both use script as their language, but BSV might have added some additional functionality not present in BTC. I don’t know since I never used BSV.

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#135

Thanks that answers my question, very much appreciated.

#136

Assignment answer:

2 2 op_mul 3 3 op_mul op_add

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#137

2 2 op_mul 3 3 op_mul op_add, is the answer. why is the answer shown as 0xD? I hope i posted this correctly.

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#138

I watched the video and now understand 0xD is hex for 13, now the question is why not just display 13, is there an advantage to displaying hex, why were not the 2s and and the 3’s shown in Hex

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#139

Hey, its great that you came up with an answer yourself. The reason why HEX is so popular in computer science is because you can easily fit 4 bits into 1 hex character (F in hex is equal to 1111).
It makes it easier to read where if you would want to use decimals 9 would be equal to 1001. :slight_smile:

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#140

22+33=13=0xD

2 2 op_Mul
3 3 op_mul
op_Add

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