CrossWorks for ARM User Guide

Portabilityputchar conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).See also Customizing putchar, puts (page 290)putsSynopsisDescriptionPortability#include int puts(const char *s);puts writes the string pointed to by s to the standard output stream using putchar andappends a new-line character to the output. The terminating null character is notwritten.puts returns EOF if a write error occurs; otherwise it returns a nonnegative value.puts conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).See also putchar (page 289)scanfSynopsisDescriptionPortability#include int scanf(const char *format, ...);scanf reads input from the standard input stream under control of the string pointedto by format that specifies the admissible input sequences and how they are to beconverted for assignment, using subsequent arguments as pointers to the objects toreceive the converted input.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.scanf returns the value of the macro EOF if an input failure occurs before anyconversion. Otherwise, scanf returns the number of input items assigned, which canbe fewer than provided for, or even zero, in the event of an early matching failure.scanf conforms to ISO/IEC 9899:1990 (C90) and ISO/IEC 9899:1999 (C99).See Also Formatted input control strings (page 285)snprintfSynopsisDescription#include int snprintf(char *s, size_t n, const char *format, ...);snprintf writes to the string pointed to by s under control of the string pointed to byformat that specifies how subsequent arguments are converted for output.290 Chapter 28 Standard C Library Reference