C++(1)

第一章 Introduction to Computers and C++ Programming

A computer is a device capable of performing computations and making logical decisions at speeds millions of times faster than human beings can.

Input Unit

Output Unit

Memory Unit

Arithmetic and Logic Unit

General Processing Unit

Secondary Storage Unit

#include <iostream>

using std::cout;

using std::cin;

using std::endl;

int main()

{

    int num1, num2;

    cout << “Enter two integers, and I will tell you\n”

           << “the relationships they satisfy:”;

    cin >> num1 >> num2;

    if(num1==num2)

        cout << num1 << “ is equal to “ << num2 << endl;

    if( num1 != num2 )

        cout << num1 << “ is not equal to “ << num2 << endl;

    return 0; //indicate that program ended successfully

}