Objective

Read a file descriptor to its end and report how many bytes and logical lines it contained.

Steps

• Write stream_stats.c.
• Expose int stream_stats(int fd, size_t *bytes, size_t *lines);.
• Read until end of file while keeping only a fixed-size local buffer.
• Store the exact byte count in *bytes.
• A newline ends a line. Nonempty final text after the last newline counts as one more line.
• An empty stream contains zero lines.
• Return 0 on success.
• Return -1 when fd is invalid, bytes is NULL, lines is NULL, or read fails.
• Set both output values to zero before the first read.
• Use only read.

Objective

Read a file descriptor to its end and report how many bytes and logical lines it contained.

Steps

• Write stream_stats.c.
• Expose int stream_stats(int fd, size_t *bytes, size_t *lines);.
• Read until end of file while keeping only a fixed-size local buffer.
• Store the exact byte count in *bytes.
• A newline ends a line. Nonempty final text after the last newline counts as one more line.
• An empty stream contains zero lines.
• Return 0 on success.
• Return -1 when fd is invalid, bytes is NULL, lines is NULL, or read fails.
• Set both output values to zero before the first read.
• Use only read.