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puts(3) Library Functions Manual puts(3) NAME puts, fputs - Writes a string to a stream LIBRARY Standard C Library (libc.a) SYNOPSIS #include <stdio.h> int puts( const char *string); int fputs( const char *string, FILE *stream); PARAMETERS Points to a string to be written to output. Points to the FILE struc- ture of an open file. DESCRIPTION The puts() function writes the null-terminated string pointed to by the string parameter, followed by a newline character, to the standard out- put stream, stdout. The fputs() function writes the null-terminated string pointed to by the string parameter to the output stream specified by the stream para- meter. The fputs() function does not append a newline character. Neither function writes the terminating null byte. The st_ctime and st_mtime fields of the file are marked for update be- tween the successful execution of the puts() or fputs() function and the next successful completion of a call to one of the following: An fflush() or fclose() function on the same stream The exit() or abort() function NOTES Full use. RETURN VALUES Upon successful completion, the puts() and fputs() functions return the number of characters written. Both subroutines return EOF on an error. ERRORS The puts() and fputs() functions fail under either of the following conditions: The stream is unbuffered. The stream's buffer needed to be flushed, the function call caused an underlying write() or lseek() to be invoked, and this underlying operation fails with incomplete output. In addition, if any of the following conditions occur, the puts() or fputs() function sets errno to the corresponding value. The O_NONBLOCK flag is set for the file descriptor underlying stream and the process would be delayed in the write operation. The file descriptor underly- ing stream is not a valid file descriptor open for writing. An attempt was made to write to a file that exceeds the process's file size limit or the maximum file size. The read operation was interrupted by a sig- nal that was caught, and no data was transferred. The implementation supports job control; the process is a member of a background process group attempting to write to its controlling terminal; TOSTOP is set; the process is neither ignoring nor blocking SIGTTOU, and the process group of the process is orphaned. This error may also be returned un- der implementation-defined conditions. There was no free space remain- ing on the device containing the file. An attempt was made to write to a pipe or FIFO that is not open for reading by any process. A SIGPIPE signal will also be sent to the process. RELATED INFORMATION Functions: fgetws(3), fputws(3), gets(3), printf(3), putc(3), putwc(3). delim off puts(3)