C in a Nutshell

Name

putchar

Synopsis

Writes a character to standard output

#include <stdio.h>
intputchar( int c );

The macro putchar() is similar to putc(), but rather than writing a character to a specified file, it writes to stdout, and hence has no FILE pointer argument.

Example

The following example code reads the beginning of a file repetitively, and reports its progress on stdout.

long count; const long CYCLES = 5000;
FILE *fp = fopen( "infile.txt", "r" );
char readback[1024];

for (count = 0; count <= CYCLES; ++count)
{
 /* Start output with '\r' to re-use same screen line. */
  printf( "\rPerformed %li file reads. ", count );

  rewind( fp );
  fgets( readback, 1024, fp );

/* Scroll a new screen line every hundred cycles. */
  if (count % 100 != 0) continue;putchar( '\n' );
}
puts( "Done." );

See Also

putc(), getc(), getchar(), fgetc(), fputc(); the functions to read and write wide characters, putwc(), fputwc(), and putwchar(); getwc(), fgetwc(), and getwchar()