Casting chain and sizeof result in Turbo C (DOS): what is printed here? #include<stdio.h> double i; int main() { (int)(float)(char) i; // value unused; type chain matters printf("%d", sizeof((int)(float)(char)i)); return 0; }

Introduction / Context:The expression casts i through char, then float, then int, and sizeof is applied to the resulting type. In Turbo C (16-bit DOS), int is typically 2 bytes.

Given Data / Assumptions:

• sizeof(int) = 2 bytes on Turbo C 16-bit.
• sizeof is computed at compile time based on the expression type after casts.

Concept / Approach:The final cast determines the sizeof result. Intermediate casts do not matter for sizeof once the final type is known.

Step-by-Step Solution:1) (char)i yields type char.2) (float)(char)i yields type float.3) (int)(float)(char)i yields type int.4) sizeof(int) on Turbo C is 2 ⇒ the program prints 2.

Verification / Alternative check:Print sizeof(int) directly to confirm 2 on the target toolchain.

Why Other Options Are Wrong:Options C/D assume 32-/64-bit sizes not applicable to Turbo C; Option A confuses char size with the final cast.

Common Pitfalls:Believing that the value of i or intermediate types influence sizeof once the final cast is int.

Final Answer:2