putc() -- STDIO Function (libc)

Write character into stream
#include <stdio.h>
int putc(c, fp) char c; FILE *fp;

putc() writes  character c  into the  file stream to  which fp  points.  It
returns c upon success.

Example

The  following example  demonstrates  putc(). It  opens an  ASCII file  and
prints its contents on the screen.   For another example of putc(), see the
entry for getc().

#include <stdio.h>
main()
{
    FILE *fp;
    int ch;
    int filename[20];

    printf("Enter file name: ");
    gets(filename);

    if ((fp = fopen(filename,"r")) != NULL) {
        while ((ch = fgetc(fp)) != EOF)
            putc(ch, stdout);
    } else
        printf("Cannot open %s.\n", filename);
    fclose(fp);
}

See Also

fputc(),
getc(),
libc,
putchar()
ANSI Standard, §7.9.7.8
POSIX Standard, §8.1

Diagnostics

putc() returns EOF when a write error occurs.

Notes

Because putc()  is a  macro, arguments  with side effects  may not  work as
expected.

© 2012 by Stephen A. Ness