Program Practice: C + + Overview

Theoretical exercises

• What are the essential differences between C + + and language?

[Reference answer]: C + + and C are fundamentally different in that C + + is Object-oriented , and the 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?

[Reference answer]:

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

In object-oriented programming , the data and functions that legitimately manipulate the data are encapsulated together as a class definition, and the encapsulation 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 following individual programs and execute them.
  

/* 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 execution are as follows: Input x y z:2 5 4 max=5

• Build a project proj1, which contains the following two files, build and edit this project, and execute.

/* 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;}

The results of one execution are as follows: Input x y z:2 5 4 max=5

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Program Practice: C + + Overview