Digit limitation from decimal point in C++

Question

I\'m new to C++. I have a double variable double a=0.1239857 and I want to limit variable a from decimal point two digits. So a will b

Answer 1

What do you mean by you want to limit the variable ? The value or its formatting. For the value, you can use floor + division. Something like:

double a = 0.12123
double b;

b = floor(a * 100) / 100