putchar
From cppreference.com
| Defined in header <stdio.h>
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| int putchar( int ch ); |
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Writes a character ch to stdout. Internally, the character is converted to unsigned char just before being written.
Equivalent to putc(ch, stdout).
Parameters
| ch | - | character to be written |
Return value
On success, returns the written character.
On failure, returns EOF and sets the error indicator (see ferror()) on stdout.