Consider the following type declarations in a fictitious language. I. Type Equiv

Question

Consider the following type declarations in a fictitious language.

I. Type Equivalence. Consider the following type declarations in a fictitious language. TYPE // integer // boolean Al int; A2 bool; A3 pointer to float; A4 pointer to int; A5 pointer to bool; A6 pointer to Al; A7 : pointer to A2; A8 structure x int; A9structure a : int; A10 structure : float; h All structure a : int ;b float; h A12 : structure { b float; a : int ; } A13 structure fx: Al ; b float; h A14 structurex: bool b : int; A15 structure fx: A2; b Al; ) A16 func x int int; A17 func x : float int; A18 func x : int, y : int int; // A19 is a function that takes two parameters and return int. The first // paraeter is a function that takes two int as parameters and return int // and second second parameter is int A19 func x A18, int) int; A20 func x func (int, int) int, int) int; A21 func x : func (int, float) int, int) int; A22 func x func (int, int) float, int) int; A23 structure fa: pointer to A24; b : pointer to A23; h A24 structure fa: pointer to A23; b pointer to A24; h A25 structure fa pointer to A26; b : A19; c A20; A26 structure fa: pointer to A25; bA20; c : A19; h A27 array [4][5] of A25; A28 array [4][5] of A26; A29 array [5]14] of A26; // function of int that returns int // function of float that returns int // array 4 rows 5 columns

Explanation / Answer

1)

1.a All the pointers are type equivalent

1.b A18,A19,A20,A21 are equivalent

1.c A8, A9

A11,A12,A13

A14,A15

A23,A24

A25,A26

A27,A28

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