Quote:
I cant understand how should I print 1+2+2 and 2+3
It is just that your code do not try to answer those cases, your algorithm is just wrong.
Your code just print a bunch of '1' and the last digit.
For a given
n
, your code will print n lines, how do you know the number of lines in answer is
n
?
Advice: try to write the solution by hand with decreasing digits, figure out the rules leading to solutions.
Since each line of solution have a variable number of digits,
recursive code or backtracking code may help.
Recursion (computer science) - Wikipedia[
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Backtracking - Wikipedia[
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5
4+1
3+2
3+1+1
2+2+1
...
Your code do not behave the way you expect, or you don't understand why !
There is an almost universal solution: Run your code on debugger step by step, inspect variables.
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't know what your code is supposed to do, it don't find bugs, it just help you to by showing you what is going on. When the code don't do what is expected, you are close to a bug.
To see what your code is doing: Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.
Debugger - Wikipedia, the free encyclopedia[
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Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[
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Basic Debugging with Visual Studio 2010 - YouTube[
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1.11 — Debugging your program (stepping and breakpoints) | Learn C++[
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The debugger is here to only show you what your code is doing and your task is to compare with what it should do.