need help with this c++ for loop problem /******Problem 1: Simple strings & loopsGiven a string and an int n, create a new stringmade of the first n characters of the originalstring, followed by the first n-1 characters ofthe original string, and so on. You may assumethat n is between 0 and the length of the string,inclusive (i.e. n >= 0 and n <= str.length())}Some examples:"Chocolate","Chocolate",4 -> "ChocChoChC"3 -> "ChoChC""Ice Cream", 2 -> "IcI"*/string decreasing (const string& str, int n){string result = "not done";// Add your code herefor()return result;

Answered: Problem 1: Simple strings & loops Given…

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Problem 1: Simple strings & loops Given a string and an int n, create made of the first n characters of th

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Concept explainers

Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.

Question

need help with this c++ for loop problem

/**
*
*
*
*
Problem 1: Simple strings & loops
Given a string and an int n, create a new string
made of the first n characters of the original
string, followed by the first n-1 characters of
the original string, and so on. You may assume
that n is between 0 and the length of the string,
inclusive (i.e. n >= 0 and n <= str.length())
}
Some examples:
"Chocolate",
"Chocolate",
4 -> "ChocChoChC"
3 -> "ChoChC"
"Ice Cream", 2 -> "IcI"
*/
string decreasing (const string& str, int n)
{
string result = "not done";
// Add your code here
for()
return result;

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