Question

C++ срочно надо, по заданию!

Answer 1

#include <iostream>

#include <vector>

using namespace std;

const double EPS = 1e-7;

const double errCode = -1e9-7;

double F(double &a_, double &b_, double &c_, double &x_){

   if(a_ < 0 && abs(x_) > EPS)

       return a_ * x_ * x_ + b_ * b_ + x_;

   if(a_ > 0 && abs(x_) <= EPS && (x_- c_) != 0)

       return x_ - a_ / (x_ - c_);

   if(c_ != 0)

       return 1 + x_ / c_;

   return errCode;

}

void solve(){

   double a, b, c, x_start, x_end, dx;

   cout << "a = ";

   cin >> a;

   cout << "b = ";

   cin >> b;

   cout << "c = ";

   cin >> c;

   cout << "start value = ";

   cin >> x_start;

   cout << "end value = ";

   cin >> x_end;

   cout << "step = ";

   cin >> dx;

   if((x_start < x_end && dx < 0) || (x_start > x_end && dx > 0) || (x_start != x_end && abs(dx) <= EPS)){

       cout << "Incorrect input data: infinite interval loop";

       return;

   }

   vector<pair<double, double>> resTable;

   for(double x = x_start; x <= x_end; x += dx){

       double res = F(a, b, c, x);

       if(abs(res - errCode) <= EPS){

           cout << "Incorrect input data: division by zero!";

           return;

       }

       resTable.push_back({x, res});

   }

   cout << "\nx\tF\n";

   for(auto &i: resTable)

       cout << i.first << "\t" << i.second << "\n";

}

int main(){

   solve();

}