sprintf/fprintf help

n=10 if i want the output to say "You have done this activity 10 times" how would i write it? I know for fprintf('You have done this activity \n'), the n would go in there, but is there a write is so that i could include words after \n? And should i use sprintf or fprintf?

Answer 1

[Star Strider]

Try this:

N = 10;
str = sprintf('You have done this activity %d times.\n', N);

or:

fprintf(fido, 'You have done this activity %d times.\n', N)

The fprintf function prints its output to the Command Window or to a file (identified by ‘fido’ here, and created by the fopen function).

The sprintf function outputs to a string (here the ‘str’ variable) that you can use for other purposes, for example a text object, plot title, xlabel, ylabel, zlabel and other situations where you want formatted output.

See the documentation for the various functions for a full description of their capabilities.

Answer 2

[Rik]

You should have a look at the documentation. Just type doc sprintf and it will open.

fprintf writes (prints) a formatted string to a file (the command output counts as a file in this case), sprintf writes a formatted string. That means that the second can be used to create a variable. In your case you need to use this:

fprintf('You have done this activity %d times \n',n)

The %d means that the first extra input should be converted to a digit, the \n is simply a new line indicator. For a full list of the possibilities and other special characters, just have a look at the documentation. That solves most of the problems (a second option is to [insert favorite search engine] an example)