#include <iostream>
#include <cstdint>
#include <type_traits>
using namespace std;
 
int main() {
	// Incorrect input/output of an int_fast8_t variable
	int_fast8_t integer_variable;
	cin >> integer_variable; // 84 in the input
	cout << static_cast<int>(integer_variable) << endl; // the value of the variable is 56 (ASCII code of the character '8')
	cout << integer_variable << endl; // character '8' printed – the character of the ASCII code 56
	// The foundation of the above problems: int_fast8_t is, in this implementation, bond to signed char
	cout << is_same<int_least8_t, signed char>::value << endl;
 
	// Ignoring garbage left in the input, that is the digit of 4
	cin.ignore();
 
	// However, a variable of the type int_least16_t works correctly
	int_least16_t another_integer_variable;
	cin >> another_integer_variable; // Number 84 in the input
	cout << static_cast<int>(another_integer_variable) << endl; // The value of the variable – 84
	cout << another_integer_variable << endl; // The variable is being printed correctly
	// This works, since in this implementation int_least16_t is the simple short int
	cout << is_same<int_least16_t, short int>::value << endl;
	return 0;
}

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ODQKCjg0

84

84