What is a syntax error?

A syntax error is a type of programming error that occurs when the code written by a programmer does not follow the correct syntax (structure or grammar) of the programming language. These errors are detected by the compiler or interpreter during the compilation or interpretation process before the program is executed. Syntax errors often prevent the program from running and need to be fixed by adjusting the code to conform to the language's syntax rules. Examples include missing semicolons, mismatched parentheses, or using a reserved keyword incorrectly.