Confusing stuff on dividing two integers

Question

Hi everyone today I was testing some stuff and find an issue.

See:

int a = 13;    
int b = 10;
double c = a/b;

The result is 1. or should it be like this ?

Answer 1

Dividing an int by int performs integer division. If you want to perform decimal division, cast one of the operands to double.

double c = (double)a / b;

// ---OR---

double c = a / (double)b;

Also, declaring c as double does not guarantee decimal division. It can be an implicitly typed variable too. As long as one or both of the operands of the / operator is of type double (or float, decimal, etc.) you will get a decimal result.

Answer 2

you have to specify that you want a double precision, for example

int a = 13;
int b = 10;
double c = a/(double)b;