Answer:
strcmp() is a built-in library function and is declared in <string. h> header file. This function takes two strings as arguments and compare these two strings lexicographically.
Explanation:
Hope it helps
Simple waveform - something like a sine wave. Very pure sound like you used to get on the tv when that girl was sitting with the toys in the middle of the night. Complex waveform is like speech etc
1) mv data1 testdata/
2) mv data1 ../
3) ls letters
These are the *nix commands. You can find out more by looking at their man pages. You can get more info about the man subsystem by running: man man