std::fputc,std::putc (3) Linux Manual Page

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

See also

        writes a character to stdout
putchar (function)