std::fputc, std::putc

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.


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.


#include <cstdio>
int main()
    for (char c = 'a'; c != 'z'; c++)
        std::putc(c, stdout);
    // putchar's return value is not equal to the argument
    int r = 0x102A;
    std::printf("\nr = 0x%x\n", r);
    r = std::putchar(r);
    std::printf("\nr = 0x%x\n", r);

Possible output:

r = 0x102A
r = 0x2A

See also

writes a character to stdout
C documentation for fputc, putc

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