CrossWorks for ARM User Guide

getsSynopsisDescription#include char *gets(char *s);gets reads characters from standard input into the array pointed to by s until end-offileis encountered or a new-line character is read. Any new-line character is discarded,and a null character is written immediately after the last character read into the array.gets returns s if successful. If end-of-file is encountered and no characters have beenread into the array, the contents of the array remain unchanged and gets returns a nullpointer. If a read error occurs during the operation, the array contents areindeterminate and gets returns a null pointer.Portabilitygets conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).See also getchar (page 288)printfSynopsisDescriptionPortability#include int printf(const char *format, ...);printf writes to the standard output stream using putchar, under control of the stringpointed to by format that specifies how subsequent arguments are converted foroutput.If there are insufficient arguments for the format, the behavior is undefined. If theformat is exhausted while arguments remain, the excess arguments are evaluated butare otherwise ignored.printf returns number of characters transmitted, or a negative value if an output orencoding error occurred.printf conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).See Also Formatted output control strings (page 281)putcharSynopsisDescription#include int putchar(int c);putchar writes the character c to the standard output stream.putchar returns the character written. If a write error occurs, putchar returns EOF.Chapter 28 - Input/output functions289