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   vsprintf    ( 3 )

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Синопсис (Synopsis)

#include <stdio.h>

       int printf(const char *restrict format, ...);
       int fprintf(FILE *restrict stream,
                   const char *restrict format, ...);
       int dprintf(int fd,
                   const char *restrict format, ...);
       int sprintf(char *restrict str,
                   const char *restrict format, ...);
       int snprintf(char *restrict str, size_t size,
                   const char *restrict format, ...);

       #include <stdarg.h>

       int vprintf(const char *restrict format, va_list ap);
       int vfprintf(FILE *restrict stream,
                   const char *restrict format, va_list ap);
       int vdprintf(int fd,
                   const char *restrict format, va_list ap);
       int vsprintf(char *restrict str,
                   const char *restrict format, va_list ap);
       int vsnprintf(char *restrict str, size_t size,
                   const char *restrict format, va_list ap);

   Feature Test Macro Requirements for glibc (see
   feature_test_macros(7)):

       snprintf(), vsnprintf():
           _XOPEN_SOURCE >= 500 || _ISOC99_SOURCE
               || /* Glibc <= 2.19: */ _BSD_SOURCE

       dprintf(), vdprintf():
           Since glibc 2.10:
               _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE