Chapter 1: Problem 14
What is a syntax error?
Short Answer
Expert verified
A syntax error is an error in the source code of a program that occurs when a programmer does not follow the rules and structure of a programming language. These errors prevent the program from being compiled (in compiled languages) or interpreted (in interpreted languages) and executed correctly.
Examples of syntax errors in different programming languages include:
1. Python - Missing a colon at the end of a control structure (e.g., if, while, or for statement)
```python
if x > 5
print("x is greater than 5")
```
Correct syntax:
```python
if x > 5:
print("x is greater than 5")
```
2. Java - Mismatched or missing curly braces {}
```java
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
```
Correct syntax:
```java
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
```
3. JavaScript - Using an undefined or misspelled variable name
```javascript
console.log("The value of x is: " + xValue);
```
If the variable `xValue` is not defined or is misspelled, it will cause a syntax error. Correct syntax:
```javascript
let xValue = 42;
console.log("The value of x is: " + xValue);
```
Step by step solution
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Key Concepts
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