stdio.h, which stands for "standard
input/output header," is the
header in the
C standard library for the
C programming language which contains
macro definitions, constants, and declarations of functions and types used for various standard
input and
output operations. The functionality descends from a "portable I/O package" written by M.E. Lesk at Bell Labs in the early 1970s.
C++ also has its own implementation of the functions from
C for compatibility reasons, which are declared in the header cstdio.
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