Question

How can I get a float or real value from integer division? For example:

double result = 30/233; 

yields zero. I’d like the value with decimal places.

How can I then format so only two decimal places display when used with a string?

Answer 1

You could just add a decimal to either the numerator or the denominator:

double result = 30.0 / 233; double result = 30 / 233.0; 

Typecasting either of the two numbers also works.

As for the second part of the question, if you use printf-style format strings, you can do something like this:

sprintf(str, 'result = %.2f', result); 

Bascially, the ‘.2’ represents how many digits to output after the decimal point.