input character only with calpha c++ code example

Example 1: how to get input from the console in c++

int age;
cin >> age;

Example 2: c++ cin operator

//Akbarali saqlagan C++ bo'yicha cin operatoriga ta'rif
#include <iostream>
using namespace std;
int main (){
  int a;
  cout << "Kattaroq sonni yozing: ";
  cin >> a;
  int b;
  cout << "Tepadaginga nisbatan kichik bo`lgan son(qiymatni) yozing: ";
  cin >> b;
  cout << "Birinchi kiritgan soningizdan ikkinchi kiitgan soningiz " << a-b << " marta katta ekanligi ma'lum bo'ldi.\n";
  return 0;
}

Example 3: get data from terminal c++

int i;
  cout << "Please enter an integer value: ";
  cin >> i;