randomization of location

Question

I ask to help to write the code which would add a random number of zeros, a random letter, and then zeros that the total numbers and letters of digits was 8.

For example: 3 zeros were output - output a letter - output 4 zeros

p.s. I tried to do string zero [...]; zero [rand ()% 7], but I did not figure out how to save the value, and then output the remaining zeros
https://code.sololearn.com/cj1mCtAamKH2/?ref=app

Answer 1

Hmm, works for me. Here:
https://code.sololearn.com/c6K1v0qTWrg2/?ref=app

Edit: Okay, spotted the mistake in your code. What you are currently doing is outputting a random amount of zeros, then a random letter and afterwards eight zeros. This is because you output the string twice. Once after its initialization, when there is a random amount of zeros inside, and once after the letter, when it consists of eight zeros. You don't use push_back(), that's why the letter is not inserted in the string and it will be filled with eight zeros.

Answer 2

I hope I understood the question correctly. Here is what I'd probably do:
//initialize string with random amount of zeros between 0 and 7
std::string s( rand() % 8, '0' );
//add random letter (small)
s.push_back( static_cast<char>( rand() % 26 + 97 ) );
//get the current length of the string
std::size_t length = s.length();
//fill up to eight characters with '0'
s.append( 8 - length, '0' );
//now you can output the string

I didn't actually test this, so I hope that it is okay and runs.
For reference on the methods I used: http://www.cplusplus.com/reference/string/string/

Answer 3

thank you! it is a pity that with random numbers it does not work out that way

Answer 4

this code outputs 8 zeros in any case after the letter, I also need that the maximum number of characters in the line does not exceed 8

Answer 5

Do you mean you want to fill the string with random numbers instead of zeros?
That could be solved using Ascii again.

Answer 6

I modified my previous code, I think this should do the trick, just some ASCII magic:
https://code.sololearn.com/cRioJQLq8L3z/?ref=app

It has become pretty long by now, if you want to use it multiple times in your code, I'd suggest you to outsource it into a function.

Answer 7

I did not understand .-.

https://code.sololearn.com/c5UKVEfkenKR/?ref=app

Answer 8

I thought of something like this as a start:
https://code.sololearn.com/cHGy5t2O0Lg5/?ref=app