@echo off
title Ageinator
echo Enter your age...
set /p age=
echo.
echo Enter Years to add...
set /p add=
echo.
cls
set /a new=%age%+%add%
IF %NEW% GTR 100 SET NEW=DEAD
IF %NEW% LSS 1 ECHO You Havent Been Born Yet... & echo. & pause & exit
echo In %add% years you will be %new%!
echo.
pause

#include <iostream>

int main()
{
    int Age,Add,x;
    system("title Ageinator");
    std::cout << "Enter your age\n\n";
    std::cin >> Age;
    std::cout << "Enter years to add\n\n";
    std::cin >> Add;
    system("cls");
    x = Age+Add;
    std::cout << "In " << Add << " years you will be " << x << "!\n\n";
    system("pause");
    return 0;
}

#include <iostream>

int main()
{
    int Age,Add,x;
    system("title Ageinator");
    std::cout << "Enter your age\n\n";
    std::cin >> Age;
    std::cout << "Enter years to add\n\n";
    std::cin >> Add;
    system("cls");
    x = Age+Add;
    if (x < 1);
       std::cout << "You Havent Been Born Yet...\n\n";
    if (x > 100)
       std::cout << "In " << Add << " years you will be DEAD!\n\n";
    else
        std::cout << "In " << Add << " years you will be " << x << "!\n\n";
    system("pause");
    return 0;
}

#include <iostream>

int main()
{
    int Age,Add,x;
    system("title Ageinator");
    std::cout << "Enter your age\n\n";
    std::cin >> Age;
    std::cout << "Enter years to add\n\n";
    std::cin >> Add;
    system("cls");
    x = Age+Add;
    if (x < 1) // there was a ; after this line which was ending the if statement so the
 // part under it was still being done even if the if statement was not true.
       std::cout << "You Havent Been Born Yet...\n\n";
    if (x > 100)
       std::cout << "In " << Add << " years you will be DEAD!\n\n";
    else
        std::cout << "In " << Add << " years you will be " << x << "!\n\n";
    system("pause");
    return 0;
}

if (x < 1)
{
   std::cout << "You Havent Been Born Yet...\n\n";
   system("pause");
   return 0;
}