Misc

Question 1

What are the 3 steps for running gdb?
1.
2.
3.

Answer 1

1. make clean debug
2. gdb (executable name)
3. gdb run

Question 2

What do < and > do in terms of redirection

Answer 2

The < symbol tells the shell to perform input redirection:
input is taken from the file infile (which must exist) instead of
from the terminal.

The > symbol tells the shell to perform “output redirection”:
the file outfile is created (or truncated if it already existed – be careful!)
and the output produced by the program is sent to that file instead
of to the terminal.

Redirection
is handled by the shell and that the bin/xyz program never sees any of the redirection arguments; in the above example it sees only bin/xyz …args… and it just reads from stdin and writes to stdout.

Question 3

How to obtain a ‘Flat Profile’ using gprof?

Answer 3

1. bin/xyz < fileName > /dev/null
2. gprof bin/xyz

Question 4

What does a header file define?

Answer 4

Interfaces