Program Practice Series (vii) C + + Overview

Theoretical exercises

• What is the essential difference between the C + + and language?

[Answer]: C + + is fundamentally different from C language in that C + + is Object-oriented . and the C language is process-oriented .

• How does the process-oriented program design approach differ from the object-oriented programming approach in treating data and function relationships?

[Answer]:

In process-oriented programming , data is only considered a static structure, and it simply waits for the function to be called to process it.

In object-oriented programming . Encapsulates the data and the functions that legitimately manipulate the data as a definition of a class. Other than that. Encapsulation also provides a mechanism for strict control of data access , so. The data is hidden in the package, which exchanges information with the outside world through the interface of the operator.

On-Machine Internship problem

• Familiar with and master the programming environment of VC + + 2008/dev-c++.

(1) The process of editing a single program.

(2) The process of establishing the project.

• Create and edit the individual programs below. and run.
  

/* File name: abc.cpp*/#include <iostream.h> void Main () {    int x,y,z,max;    cout << "input x y z:";    Cin >> x >> y >> z;    if (x>y)       max=x;    else       max=y;     if (max<z)       max=z;     cout << "max=" << Max << Endl; }

Once the program is compiled, the results of one run are as follows: Input x y z:2 5 4 max=5

• Build a project proj1, which includes for example the following two files, creating and editing this project. and run.

/* File name: file1.cpp*/#include <iostream.h> extern int max (int,int); void Main () {   int x,y,z,m;   cout << "input x y z:"; Cin >> x >> y >> z;   M=max (x, y);   M=max (m,z);   if (m<z) m=z;   

/* File name: file2.cpp*/int max (int x,int y) {    if (x>y)      return x;    else      return y;}

One run result such as the following: input x y z:2 5 4 max=5

For a lot of other discussions and exchanges with program language, please follow this blog and Sina Weibo songzi_tea.

Program Practice Series (vii) C + + Overview