#include <iostream>
#include <windows.h>
#include <conio.h>
#include <ctime>
int main()
{
srand(time(NULL));
const int n = 20;
double r = 0;
int a[n];
system("cls");
for (int i = 0; i < n; i++)
{
a[i] = rand() % 50;
std::cout << a[i] << " ";
r += 1. / a[i];
}
std::cout << std::endl;
r = 1. / r;
std::cout << "R: " << r << std::endl;
getch();
return 0;
}
#include <iostream>
using namespace std;
int main()
{
int a, b;
cout << "a = ", cin >> a;
cout << "b = ", cin >> b;
for (int i=a; i<=b; i++) {
cout << i << " ";
}
return 0;
}
Пример:
a = 5
b = 12
5 6 7 8 9 10 11 12
2.
#include <iostream>
using namespace std;
int main()
{
int a, b, s=0;
long long p=1;
cout << "a = ", cin >> a;
cout << "b = ", cin >> b;
for (int i=a; i<=b; i++) {
p = p*i;
s = s+i;
}
cout << "p = " << p << " s = " << s;
return 0;
}
Пример:
a = 5
b = 12
p = 19958400 s = 68