Monday 4 July 2016

Mystery Code | C++ Programming Codes

Mystery Code | C++ Programming Codes

Description: This C++ code is named Mystery because of confusion created by parameters (variables and arrays) sent by-value and by-reference. This is one of those C++ programming codes that are confusing and challenging. A function is called from main()  and then some other function calls are made from that function.


#include <iostream>
using namespace std;

void mystery2(int t2[],int a2[],int n2,int k2)
{
     for (int j=0;j<k2;j++)
           t2[j]=a2[n2-k2+j];
}

void mystery3(int a3[],int n3,int k3)
{
     for (int i=n3-1;i>=k3;i--)
           a3[i]=a3[i-k3];
}

void mystery4(int t3[],int a3[],int k3)
{
     for (int i=0;i<k3;i++)
           a3[i]=t3[i];
}

void mystery1(int a1[],int n1, int k1)
{
     int temp[100];

     if (k1>0){
           mystery2(temp,a1,n1,k1);
           mystery3(a1,n1,k1);
           mystery4(temp,a1,k1);
     }
}

int main()
{
     int arr[5]={1,2,3,4,5};

     mystery1(arr,5,3);

     for (int i=0;i<5;i++)
           cout<<arr[i]<<" ";

return 0;
}

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