#include<stdio.h>
#include<ctime>
#include<iostream>
#include<cmath>
#include<windows.h>
#include<qtglobal>
using namespace std;
void tab();
void tsel();
void sluch();
float f1(int);
int main()
{
int vybor;
do
{
SetConsoleTitleA("Vykoristannya ciklu for");
system("cls");
cout<<"Vyberit variant robotu z programoy:\n"
"0.Vyhid.\n"
"1.tabulyaciya funkcii.\n"
"2.Opraciuvannya poslidovnostei cilyh chisel.\n"
"3.Opraciuvannya poslidovnostei vypadkovih chisel.\n"
"Vash vybir:\n";
m1:
cin>>vybor;
switch(vybor)
{
case0:
system("cls");
SetConsoleTitleA("Vyhid");
cout<<"Dlya vyhodu natisnit Enter.\n";
exit(0);
case1:
system("cls");
tab();
break;
case2:
system("cls");
tsel();
break;
case3:
system("cls");
sluch();
break;
default:
{cout<<"Pomylka!vvedit chislo 0,1,2 abo 3:\n";
goto m1;
}
}
system("pause");
}while(true);
}
void tab()
{SetConsoleTitleA("tabulyaciya funkcii");
float a,b,x0,x1,step;
float x;
float q;
float k;
cout<<"Vvedit znachennya dlya pidrahuvannya q=(ln(a*x)+x)/b+ln(x-b)+a:"<<endl;
do
{
cout<<"a=";
cin>>a;
cout<<"b=";
cin>>b;
cout<<"vvedit pochatkove I kinceve znachennya argumenta:\n";
cin>>x0>>x1;
if(a*x0<=0||x0-b<=0||a*x1<=0||x1-b<=0)
{cout<<"Pomylka!Argument,sho peredaetsya do logarifmu,povynen buti dodatnim.\n"
"Vvedit novi znachennya:\n";
}
}
while(a*x0<=0||x0-b<=0||a*x1<=0||x1-b<=0);
cout<<"Vvedit kroki zmini argumenta:\n";
cin>>step;
k=ceil((x1-x0)/step);
cout<<"\nRezultat vikonannya:\n\n";
for(int i=0;i<=k;i++)
{x=x0+step*i;
q=(log(a*x)+x)/b+log(x-b)+a;
cout.width(5);cout.precision(3);cout<<x;
cout.width(15);cout.precision(4);cout<<q<<endl;
}
cout<<endl;
}
void tsel()
{SetConsoleTitleA("Opraciuvannya poslidovnosti cilih chisel");
int n1,n2,x1,x2,k;
cout<<"Stvorimo programu,sho znahoditime minimalne znachennya funkcii"
"f(x)=10x^2+215x+100 na intervali cilih chisel vid n1 do n2.\n";
cout<<"Vvedit interval vid n1 do n2:"<<endl;
cin>>n1>>n2;
if(n2<=n1)
{do{cout<<"Pomylka!Znachennya n1povinno buti menshe n2.vvedit znovu:\n";
cin>>n1>>n2;}
while(n2<=n1);
}
for(x1=n1,x2=n1+1,k=x1;x2<=n2;x2++)
{if(f1(k)>f1(x2)){k=x2;}}
cout<<"Minimalne znachennya funkcii na intervali:\nf(х)="<<f1(k)<<"pri х="<<k<<endl<<endl;
}
float f1(int x)
{
return 10*pow(x,2)+215*x+100;
}
void sluch()
{SetConsoleTitleA("Obrobka poslidovnosti vipadkovih chisel");
int n;
cout<<"testuemo programu,sho generue vipadkovi chisla vid 1 do 100.\n"
"Znaidemo kilkist neparnih chisel v poslidovnosti vipadkovih chisel.\n"
"Zadaite dovjinu poslidovnosti:\n";
cin>>n;
qsrand(time(NULL)|clock());
int x;
cout<<"Kilkist neparnih chisel v poslidovnosti vipadkovih chisel:\n";
for(int g=1;g<=10;g++)
{
int kolvo,i;
for(i=1,kolvo=0;i<=n;i++)
{
x=qrand()%100+1;
//cout<<x<<endl;
if(x,2==1)kolvo++;
}
cout<<"V poslidovnosti"<<g<<":"<<kolvo<<endl;
}
}