0. vector hosil qiling va ga karrali elementlar sonini uning yigindisiga nisbati topilsin

20.VECTOR hosil qiling va 7 ga karrali elementlar sonini uning yigindisiga nisbati topilsin.

#include

#include
#include
using namespace std;
int main() {
string line;
int number;
vector < int > numbers;
cout << "Sonlarni bo'sh joy bilan ajratib kiriting: ";
getline(cin, line);
istringstream stream(line);
while (stream >> number)
numbers.push_back(number);
int sum = 0;
int sevens;
for (int i = 0; i < numbers.size(); i++) {
sum += numbers[i];
if (numbers[i] == 7) sevens++;
}
cout << "Natija: " << 1.0 * sevens / sum << endl;
system("pause");
return 0;
}

2-masala
20.Berilgan char turidagi to’plamning kata harfdan iborat elementlarini kichik harfga o’girib, 2- to’plamni va kichik harfdan iborat elementlarini katta harfga o’girib, 3- to’plamni hosil qiluvchi hamda ularni ekranga chiqaruvchi dastur tuzing.

#include

#include
#include

using namespace std;

int main() {
char input[100];
char upper[100];
char lower[100];

cout << "1- to'plam elementlarini kiriting: ";

cin >> input;
for (int x = 0; x < 100; x++)
if (input[x] != 'x\0') {
upper[x] = toupper(input[x]);
lower[x] = tolower(input[x]);
} else break;

cout << "\n2-to'plam: " << upper;

cout << "\n3-to'plam: " << lower << "\n";

system("pause");

return 0;
}