str2num function - String:
The function str2num does the opposite; it takes the string in which a number is stored and converts it to the type double:
>> num = str2num('123.456')
num =
123.4560
When there is a string in which there are numbers split by blanks, then the str2num function will convert this to the vector of numbers (of the default type double).
For illustration,
>> mystr = '66 2 111';
>> numvec = str2num(mystr)
numvec =
66 2 111
>> sum(numvec)
ans =
179