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uvszprintf.3alleg

NAME

uvszprintf - Writes formatted data into a buffer, using size and variable arguments. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

int uvszprintf(char *buf, int size, const char *format, va_list args);

DESCRIPTION

This is like uszprintf(), but you pass the variable argument list directly, instead of the arguments themselves. Example:

    #include <stdarg.h>
    
    void log_message(const char *format, ...)
    {
       char buffer[100];
       va_list parameters;
       
       va_start(parameters, format);
       uvszprintf(buffer, sizeof(buffer), format, parameters);
       va_end(parameters);
       
       append_buffer_to_logfile(log_name, buffer);
       send_buffer_to_other_networked_players(multicast_ip, buffer);
       and_also_print_it_on_the_screen(cool_font, buffer);
    }
    
    void some_other_function(void)
    {
       log_message("Hello %s, are you %d years old?\n", "Dave", 25);
    }
 

RETURN VALUE

Returns the number of characters that would have been written without eventual truncation (like with uvsprintf), not including the terminating null character.

SEE ALSO

uconvert(3alleg), uszprintf(3alleg), uvsprintf(3alleg)