107 lines
2.3 KiB
C++
107 lines
2.3 KiB
C++
#include <iostream>
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#include <math.h>
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using namespace std;
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void z1(){
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double R,r,h;
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cout << "R = ";
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cin >> R;
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cout << "r = ";
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cin >> r;
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cout << "h = ";
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cin >> h;
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if (R <= 0 or r <= 0 or h <= 0) {
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cout << "Нет решений"<<endl;
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}
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float l = sqrt(pow(R-r, 2) + pow(h, 2));
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float S = M_PI * (pow(R, 2) + (R + r) * l + pow(r, 2));
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float V = (1.0/3) * M_PI * h * (pow(R, 2) + R * r + pow(r, 2));
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cout << "S= " << S << endl;
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cout << "V= " << V << endl;
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}
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void z2(){
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double x,a,y;
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cout<<"Введите x: ";
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cin>>x;
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cout<<"Введите a: ";
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cin>>a;
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if (abs(x)<1){
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if (x!=0){
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y=a*log(abs(x));
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cout<<"Результат: "<<y;}
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else{
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cout<<"Логарифма от нуля не бывает";
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}
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}
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if (abs(x)>=1){
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if ((a-pow(x,2))<=0){
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cout<<"Под корнем не может быть отрицательных чисел"<<endl;
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}
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else{
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y=sqrt(a-pow(x,2));
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cout<<"Результат: "<<y<<endl;
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}
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}
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}
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void z3(){
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double x,y,b,z;
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cout << "x = ";
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cin >> x;
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cout << "y = ";
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cin >> y;
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cout << "b = ";
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cin >> b;
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if (((b-x)<0) or ((b-y)<0)){
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cout<<"Под корнем или логарифмом отрицательное число"<<endl;
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}
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else{
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z=log(b-y)*sqrt(b-x);
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cout<<"Результат:"<<endl<<z<<endl;}
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}
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void z4(){
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int n;
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cout<<"Введите n: ";
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cin>>n;
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if (n<=0){
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cout<<"цикла не будет";
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}
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else{
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for (int i=0;i<10;i++) {
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cout<<n++<<endl;
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}
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}
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}
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void z5(){
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double y;
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float x=-4;
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do {
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y=(pow(x,2)-2*x+2)/(x-1);
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if (x!=1){
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cout<<"X="<<x<<" Y="<<y<<endl;}
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else{
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cout<<"X="<<x<<"\t Y-не определен"<<endl;
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}
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x=x+0.5;
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}
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while (x<=4);
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}
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int main() {
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setlocale(LC_ALL, "");
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// cout<<"Задание 1"<<endl;
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// z1();
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cout<<"Задание 2"<<endl;
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z2();
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// cout<<"Задание 3"<<endl;
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// z3();
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// cout<<"Задание 4"<<endl;
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// z4();
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// cout<<"Задание 5"<<endl;
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// z5();
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}
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