Four pairs of numbers have been given, out of which

Which phase of the compiler ensures that identifiers are declared before they are used?

Which of the following is NOT a type of intermediate code?

Which of these is a bottom-up parser?

Peephole optimization is applied during:

In a compiler, lexical analysis is responsible for:

Which of the following is the first phase of a compiler?

Which data structure is commonly used in implementing a recursive descent parser?

Which technique is used to handle left recursion in a grammar?

Which phase of the compiler checks the type consistency of the program?