Dividing two integers doesn't print as a decimal number in Rust

I'm learning Rust, but when I print a decimal number, only the integer part is printed, not the decimal part:

fn main(){
    println!("{:.3}", 22/7);
}
// This only show 3

but when I print the decimal number explicitly, it works correctly:

fn main(){
    println!("{:.3}", 0.25648);
}
// this print 0.256

Just like in C and C++, dividing integers results in another integer. Try this C++ program to see:
#include

using namespace std;

int main()
{
cout

Similarly in Rust, you need to specify both numbers as floats instead, which is done by putting a decimal anywhere in the number. Try this Rust equivalent of the above program:
fn main() {
println!("{:.3}", 22 / 7); // 3
println!("{:.3}", 22.0 / 7.0); // 3.143
}


If you have variables, you can convert them with as to either f32 or f64, depending on your needs:
fn main() {
let x = 22;
println!("{:.3}", x / 7); // 3
println!("{:.3}", x as f32 / 7.0); // 3.143
}
`

Stack Overflow Q#35097710, score: 85