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# bson_snprintf()

## Synopsis

    int
    bson_snprintf (char *str, size_t size, const char *format, ...)
       BSON_GNUC_PRINTF (3, 4);

## Parameters

- `str`: The destination buffer.

- `size`: The size of `str`.

- `format`: A printf style format string.

## Description

This is a portable wrapper around `snprintf()`. It also enforces a trailing `\0` in the resulting string.

## Returns

The number of bytes written to `str`.