From a programming perspective, what are the differences between C language and Python?

C language and Python are two widely used programming languages. They have many differences in syntax, features and uses. This article will compare the differences between C language and Python from a programming perspective, and demonstrate the differences between them through specific code examples.

First, let’s take a look at the differences in grammatical structure between C language and Python. C language is a statically typed language, and the code needs to explicitly declare the data type of the variable, such as int, float, etc.; while Python is a dynamically typed language, and the data type of the variable is automatically inferred by the interpreter. The following is a simple example of variable declaration and assignment:

// C language code example
int num = 10;
float price = 5.99;

# Python code example
num = 10
price = 5.99

As you can see, Python does not need to specify the type of the variable, while C language needs to specify the data type when declaring.

Secondly, there are some differences in grammatical rules between C language and Python. For example, in loops and conditional statements, C language uses curly braces to indicate the beginning and end of code blocks, while Python uses indentation to indicate the level of code blocks. The following is a simple if statement example:

// C language code example
if(num > 0) {
    printf("Num is positive
");
}

# Python code example
if num > 0:
    print("Num is positive")

As can be seen from the above example, Python code is more concise, while C language code needs to use curly braces to clarify the scope of the code block.

In addition, there are some differences between C language and Python in the definition and calling of functions. In C language, functions need to be declared before use, but Python does not. The following is a simple function definition and calling example:

// C language code example
#include <stdio.h>

void greet() {
    printf("Hello, World!
");
}

int main() {
    greet();
    return 0;
}

# Python code example
def greet():
    print("Hello, World!")

greet()

As you can see, the definition of functions in Python is more intuitive and concise, while C language requires the prototype of the function to be declared in advance.

In addition, C language and Python are also very different in terms of memory management and exception handling. The C language requires manual memory management, including allocating and releasing memory space, while Python automatically handles memory management by the interpreter, using a garbage collection mechanism to release memory that is no longer used. In terms of exception handling, Python uses the try-except statement to handle exceptions, while the C language represents error status through return values ​​or global variables.

In general, there are many differences in syntax, features and uses between C language and Python. C language is closer to the bottom and is suitable for system-level programming and performance optimization; Python is more advanced and easy to read, suitable for rapid development and prototype verification. When choosing which language to use, you need to make trade-offs and choices based on specific needs and project characteristics.

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