ascii in c++ code example

Example 1: c++ get ascii value of char

#include<iostream>
using namespace std;
int main ()
{
    char c;
    cout << "Enter a character : ";
    cin >> c;
    cout << "ASCII value of " << c <<" is :  " << (int)c;
    return 0;
}

Example 2: ascii allowed in c++

#include <iostream>
int main()
{
  std::cout << "Printable ASCII [32..126]:\n";
  for (char i = ' '; i <= '~'; ++i) {
    std::cout << i << ((i % 16 == 15) ? '\n' : ' ');
  }
}