Which one of the following statements regarding programming languages is true?

Question

BlackTom AI · Accepted Answer

Programming languages are used to create the instructions contained in applications, because they provide a human-readable and structured way to express logic that computers execute.

1. Relevant knowledge points and concepts
- Programming languages: formal languages (high-level like Python, Java, low-level like assembly) that let programmers write algorithms and control flow.
- Compilation/interpretation: compilers or interpreters translate high-level code into machine code (binary) the CPU executes.
- Machine language: the binary instructions the processor understands; programmers rarely write raw binary in modern development.
- English-like syntax: many high-level languages use keywords and constructs reminiscent of English (if, while, for, print), improving readability.

2. Step-by-step reasoning
Step 1: Applications perform tasks by executing instructions. Step 2: Those instructions are authored by programmers using programming languages. Step 3: A compiler or interpreter converts that source code into machine-level instructions the processor runs. Step 4: Therefore, programming languages are the tools used to create application instructions.

3. Calculations/intermediate steps
- No numeric calculations are required. The logical mapping: source code (human-readable) -> compiler/interpreter -> machine code (binary) -> executed by CPU.

4. Why the correct answer is correct
Answer (a) states that programming languages are used to create application instructions. This matches the model: programmers write source code in a programming language, which becomes the executable instructions for applications after translation to machine code.

5. Why the other options are incorrect
- (b) Incorrect: Tools can generate code, but programming languages remain essential; computers do not autonomously write all programs.
- (c) Incorrect: Many languages include English-like keywords and constructs; they often resemble English to improve readability.
- (d) Incorrect: Programmers typically use high-level languages, not raw machine language or binary; assembly is low-level but not all languages require it.

6. Conclusion
Therefore, option a is correct: programming languages are used to create the instructions contained in applications. This matches the provided answer.

Which one of the following statements regarding programming languages is true?单项选择题

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