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Input/output function prototypes and macros are defined in which header file?

  • A.conio.h
  • B.stdlib.h
  • C.stdio.h
  • D.dos.h

Answer: C

Correct answer: stdio.h

<stdio.h> declares the input and output functions - printf, scanf, fopen, fgets - and the macros and types they use, including FILE, EOF, NULL and the SEEK_ constants. conio.h and dos.h are non-standard DOS headers.

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