In Octave, the string manipulation function
strtok() can be very handy for scanning through words in a long sentence.
In the following example, we have a sentence:
'hello world how are you'
Assuming all words are separated by a white space, we can repeat this command to extract (1) the word string
tok and the remaining sentence
Concretely, run the following in an octave command line interface (CLI):
octave:93> s = 'hello world how are you' s = hello world how are you octave:94> [tok, s] = strtok(s) tok = hello s = world how are you octave:95> [tok, s] = strtok(s) tok = world s = how are you octave:96> [tok, s] = strtok(s) tok = how s = are you octave:97> [tok, s] = strtok(s) tok = are s = you octave:98> [tok, s] = strtok(s) tok = you s = octave:99> [tok, s] = strtok(s) tok = s = octave:100>
We can easily do a while loop like this to scan through the whole thing:
s = 'hello world how are you'; while ~isempty(s), [tok, s] = strtok(s); fprintf('\n======\n'); disp(tok); disp(s); end;
====== hello world how are you ====== world how are you ====== how are you ====== are you ====== you octave:115>