# Rust program to get the minimum number of bits to store a number

Here, we are going to learn how to get the minimum number of bits to store a number in Rust programming language?
Submitted by Nidhi, on September 24, 2021

Problem Solution:

Here, we will create a 16-bit integer number, and then we will find the minimum number of bits to store a number and print the result.

Program/Source Code:

The source code to get the minimum number of bits to store a number is given below. The given program is compiled and executed successfully.

```// Rust program to get minimum number
// of bits to store a number

fn main() {
let mut num:i16 = 14;
let mut val:i16 = 15;
let mut cnt:i16 = 0;
let mut tmp:i16 = 0;

while val>=0
{
tmp = num & (1<<val);
if tmp>0
{
cnt = cnt + 1;
}
val = val - 1;
}

if(num!=0)
{
cnt=cnt+1;
}

println!("Total number of bits required = {}",cnt);
}
```

Output:

```Total number of bits required = 4
```

Explanation:

Here, we created an integer variable num with an initial value of 14. Then we checked the bits to get the minimum number of bits are required to store a number and printed the result.

Student's Section
Subscribe