What are the advantages of high level language?

Answer 1

High level languages abstract the details of the hardware from the developer, typically reducing the amount of time required to develop a program. This also tends to make the program "portable," meaning it can run across multiple types of hardware, called "platforms." As a side effect, it usually means that a developer does not need to learn the specific instructions that a particular platform requires, so there is less of a learning curve for each new platform the developer needs to write an application for.

Answer 2

High-level languages are more portable than low-level languages and favour the programmer rather than the machine. Low-level languages are machine-specific, and every architecture has its own specific version of low-level assembler. In order to be portable, the low-level instruction sets must match exactly, as must the assembler syntax. However this is rarely if ever the case.

High-level languages are highly abstract and partially or completely separate the programmer from the machine. While some high-level languages such as C++ do allow a degree of low-level programming, the emphasis is always on functionality rather than machine-specific code. Java, for instance, is so abstract that there is very little direct access to the underlying architecture. However, Java is a far more portable language than C++ because code is written to suit the Java virtual machine. By contrast, C++ programs run many times quicker than equivalent Java programs because they do not need to be interpreted. However, C++ programs must be compiled separately for each supported platform (albeit with little or no change to the actual source code) whereas Java need only be compiled once for all supported platforms.

Answer 3

An advantage of assembly language over high level languages is the fine control that it allows over the code.

Since assembly language directly correlates which machine instructions, the only way to get closer to the machine is to write in binary or hex code.

Another advantage is that you can invoke specialized instructions to do IO, or manipulate hardware, such as page descriptor tables in the kernel.

The fine control advantage is, however, illusive. Modern compilers do a very good job of optimizing,

and assembly language is very verbose, requiring you to specify "everything", and to keep track of "everything".

Other than for IO or hardware control, it is best to stick with the high level language.

Answer 4

High Level Languages (HLL) offers faster development than assembly as a general rule. The code is generally easier to read and takes less time to write the same program in a HLL than it does in assembler.

Answer 5

You can program easier because there are a lot of functions, procedures and tools that help you programming and the language is more comprehensible.

Answer 6

Because it is more easily understood by humans. Would you want to be looking at 1s and 0s and a MOVEs and ADDs all day? No. Humans think more in terms of actual language.