praktika-cpp-2PO07/main.cpp

#include <cstdlib>
#include <iostream>
#include <Math.h>
#include <Windows.h>

using namespace std;

const int n = 20; //<2F><><EFBFBD>-<2D><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
float a,b; 
float X[n], Y[n]; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void SetColor(int text, int background)
{
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
   SetConsoleTextAttribute(hStdOut, (WORD)((background << 4) | text));
}

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void startApp() {
     system("CLS");//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     SetColor(2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     cout << "---------------------------------" << endl;
     cout << "- Author: Victor aNNiMON Melnik -" << endl;
     cout << "---------------------------------" << endl;
     SetColor(15,0);//<2F><><EFBFBD><EFBFBD><EFBFBD>       
} 

//<2F><><EFBFBD><EFBFBD> a <20> b
void enterAandB() {
     cout << endl << "Enter a: ";
     cin >> a;
     cout << "Enter b: ";
     cin >> b;
     if(a>b) {
         float tmp = a;
         a = b;
         b = tmp;
     }              
}

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> X
void calculateX(bool view) {
      if(view) cout << "Calculating "<<n<<" values of array X"<<endl;
      SetColor(15,0);//<2F><><EFBFBD><EFBFBD><EFBFBD>    
      for(int i=0; i<n; i++) {
         X[i]=0.1*sqrt(12*i)+log10(i+7);
         if(view) cout<<i<<": "<<X[i]<<endl;       
      }  
} 

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Y
void calculateY(bool view) {
      if(view) cout << "Calculating "<<n<<" values of array Y"<<endl;
      SetColor(15,0);//<2F><><EFBFBD><EFBFBD><EFBFBD>    
      for(int i=0; i<n; i++) {
          if(X[i]>1) Y[i]=pow(X[i],4)+((2*(X[i]*X[i])+3)/(M_PI*X[i]))*sin(X[i])+0.47;   
          else Y[i]=X[i]*sin(pow(X[i],1/3))+((2*log(fabs(X[i])+1)+1)/(1+2*(cos(X[i]-M_PI/6)*
               cos(X[i]-M_PI/6))));
          if(view) cout<<i<<": "<<Y[i]<<endl;       
      }  
}

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void process() {
     char m = ' ';//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     bool viewX=false,viewY=false;
     SetColor(2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     cout << endl << "Choose one of parameters:" << endl;
     SetColor(14,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     cout << "\t 0 - Not view X and Y arrays" << endl;
     cout << "\t 1 - View X array" << endl;
     cout << "\t 2 - View Y array" << endl;
     cout << "\t 3 - View X and Y arrays" << endl;
     SetColor(15,0);//<2F><><EFBFBD><EFBFBD><EFBFBD>     
     while((m<'0') || (m>'3')) {
         cin >> m;
     }
     switch(m) {
         case '0': 
              viewX=viewY=false;
              break;
         case '1': 
              viewX=true;
              viewY=false;
              break;
         case '2': 
              viewX=false;
              viewY=true;
              break;
         case '3': 
              viewX=viewY=true;
              break;
     }
     SetColor(2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     calculateX(viewX);
     SetColor(2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     calculateY(viewY);
}     

// <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void getAnswer(float a, float b) {
     int num = 0;
     SetColor(14,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     for(int i=0; i<n; i++) {
        if((Y[i]>=a) && (Y[i]<=b)) {
             cout << i << ", ";
             num++;
        }          
     }   
     if(num>0) {
         cout << " are belong to ["<<a<<","<<b<<"]"<<endl;               
     }           
     cout << "Number of elements: "<<num<<endl;
}

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
int main()
{
    startApp();
    enterAandB();
    process();
    getAnswer(a,b);
    system("PAUSE");
    return 0;
}