What is compilation errors?

Compilation errors occur when the source code written in a programming language contains syntax or semantic errors that prevent the compiler from creating executable code. There are different types of compilation errors ranging from syntax errors to logical errors. Syntax errors occur when there are errors in the structure of the code, such as a missing semicolon or a misspelled keyword. Semantic errors occur when there is a problem with the meaning of the code, such as using a variable that has not been declared. Compilation errors can also occur due to issues like incompatible types, undefined functions or variables, and incorrect file formats. These errors need to be fixed before the code can be successfully compiled.