Let’s jump in
To see what makes C/C++ faster over Python
First, C/C++ is a compiled language and Python is an interpreted language
The annoying thing with the hardware is that it won’t understand the source code which you have written on your computer screen
The barbaric hardware understands only machine language which is 0’s and 1’s
So to convert our source code to machine code we use either a compiled language or interpreted language
Compiled language[C/C++] is faster than interpreter language[Python]
Because compiled languages[C/C++] translate the source code in one short on the other hand interpreter language[Python] translate the source code line by line
As a result, the overhead of interpreting the code makes the interpreter language[Python] slower and inefficient for intensive tasks such as
- Audio processing
- Video processing
- Signal processing
- Baseband processing
- Digital image processing
- Speech signal processing
- Adaptive signal processing
- 3D computer games
So, to program the above task speed plays a key role in the computation, especially for real-time performance
Second, C/C++ is close to the hardware
Because expressions in C/C++ can be compiled effortlessly into machine code
Because some idioms in C/C++ match exactly to machine-level instruction such as
- Address of
- Pointers operators
- Decrement operators
- Auto increment
As a result, C/C++ speeds up the computation
If Python is dumb and crooked language then why do we use?
In programming languages there is nothing called perfect language every language has its prons and cons
So, according to need at the moment on a particular task one language might be perfect other might not
Here’s an example
C/C++ has poor portability
But what is portability?
That the designers of different CPUs have created different machine languages for all of their kinds
Then what’s the problem?
The truth is the program created for an intel i7 in your computer can’t be executed on ARMv8 CPU in your phone
Clear as mud?
Here’s another one
C/C++ has an evil concept called pointers
Python and java don’t have a concept called pointers in them
Pretty effective right?
But why do you say pointers are evil?
Because pointers error are difficult to find in code, another eye-opening thing about pointers is that not secure from the security point of view
A pointer is a thief that does all memory leakage
Java came on this because of the notorious pointer’s error in C/C++