std::fputc,std::putc (3) - Linux Manuals

std::fputc,std::putc: std::fputc,std::putc

NAME

std::fputc,std::putc - std::fputc,std::putc

Synopsis

Defined in header <cstdio>
int fputc( int ch, std::FILE* stream );
int putc( int ch, std::FILE* stream );

Writes a character ch to the given output stream stream.
Internally, the character is converted to unsigned char just before being written.
In C, putc() may be implemented as a macro, which is disallowed in C++. Therefore calls to std::fputc() and std::putc() always have the same effect.

Parameters

ch - character to be written
stream - output stream

Return value

On success, returns the written character.
On failure, returns EOF and sets the error indicator (see std::ferror()) on stream.

Example

// Run this code

  #include <cstdio>

  int main()
  {
      for (char c = 'a'; c != 'z'; c++)
          std::putc(c, stdout);
      std::putc('\n', stdout);

      // putchar return value is not equal to the argument
      int r = 0x1070;
      std::printf("\n0x%x\n", r);
      r = std::putchar(r);
      std::printf("\n0x%x\n", r);
  }

Output:

  abcdefghijklmnopqrstuvwxy
  0x1070
  p
  0x70