What is the difference between C language and C

What is the difference between C language and C

C language and C are two widely used programming languages. They have many differences in syntax, features and uses. . This article will discuss the differences between C language and C in terms of syntax, object-oriented, file operations, etc., and provide corresponding code examples.

1. Syntax:

C language is a procedural programming language, which mainly focuses on the calling of procedures and functions. C is an object-oriented programming language. In addition to inheriting the characteristics of the C language, it also introduces object-oriented concepts such as classes, objects, encapsulation, inheritance, and polymorphism.

//C language example
#include <stdio.h>
int main() {
    int a = 5;
    printf("Value of a is %d", a);
    return 0;
}

// C example
#include <iostream>
using namespace std;
int main() {
    int a = 5;
    cout << "Value of a is " << a;
    return 0;
}

2. Object-oriented:

The C language does not support object-oriented programming, but C has object-oriented features that allow encapsulation, inheritance and polymorphism. The object-oriented approach makes C more flexible and modular.

class Person {
public:
    string name;
    int age;
    void display() {
        cout << "Name: " << name << " Age: " << age << endl;
    }
};

int main() {
    Person p;
    p.name = "Alice";
    p.age = 25;
    p.display();
    return 0;
}

3. File operations:

File operations in C language mainly rely on the standard input and output library, such as fopen, fread, fwrite and other functions in stdio.h. C provides a more convenient way to process files, using the ofstream and ifstream classes to implement file input and output operations.

//C language file operation example
#include <stdio.h>
int main() {
    FILE *fp;
    fp = fopen("file.txt", "w");
    fprintf(fp, "This is a file written in C");
    fclose(fp);
    return 0;
}

//C file operation example
#include <iostream>
#include <fstream>
using namespace std;

int main() {
    ofstream file("file.txt");
    file << "This is a file written in C ";
    file.close();
    return 0;
}

To sum up, there are obvious differences between C language and C in terms of syntax, object-oriented, file operations, etc. The choice of which language to use depends on project needs and development purposes. Developers should flexibly choose an appropriate programming language based on specific circumstances.

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