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// istream::putback example
#include <iostream> // std::cin, std::cout
#include <string> // std::string
int main () {
std::cout << "Please, enter a number or a word: ";
char c = std::cin.get();
if ( (c >= '0') && (c <= '9') )
{
int n;
std::cin.putback (c);
std::cin >> n;
std::cout << "You entered a number: " << n << '\n';
}
else
{
std::string str;
std::cin.putback (c);
getline (std::cin,str);
std::cout << "You entered a word: " << str << '\n';
}
return 0;
}
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