2 laba C++

#include <conio.h>
#include <math.h>
#include <stdio.h>
#include <windows.h>
#include <iostream>

main() {
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);
    float a, b, x, z, stepen_e, stepen_x_2;
    char Error_text[] = "NET resheniay";
    std::cout <<"Vvedite a: ";
    std::cin >>a;
    std::cout <<"Vvedite b: ";
    std::cin >>b;
    std::cout <<"Vvedite x: ";
    std::cin >>x;
    if (x<=a) {
        std::cout <<"esly x<=a ";
        ///////////////<vihod>
        if  ((x<=a)&&(x<0)) {
            std::cout <<"%s. 1",Error_text;
            exit(0);
        }
        ///////////////</vihod>
        z= log(pow(27,((float)1/3))+sqrt(x)+sin(x)+cos(x));    //pow(x,y) — x^y
    }

    else if ((a<x)&&(x<b)) {
        std::cout <<"esly a<x<b ";
        stepen_e=cosh(x)+tanh(x);
        stepen_x_2=pow(x,2);
        z=  pow( (pow(tan(x),2)+1.3*exp(stepen_e)) ,  stepen_x_2);
    } else if (x >= b) {
        std::cout <<"esly x >= b ";
        ///////////////<vihod>
        if  ((x>=b)&&(x>=1))  {
            std::cout <<"%s. 2",Error_text;
            exit(0);
        } else if  ((x>=b)&&(x<0)) {
            std::cout <<"%s. 3",Error_text;
            exit(0);
        }
        ///////////////</vihod>
        z=fabs(sin(x)-0.11)*acos(x) +  pow(x, asin(x));
    }
    std::cout <<"REZULTAT z = %f\n",z;
    return 0;
}