Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
While and For Range in Rust Programming
We know that Rust provides a loop keyword to run an infinite loop. But the more traditional way to run loops in any programming language is with either making use of the while loop or the for range loop.
While Loop
The while loop is used to execute a code of block until a certain condition evaluates to true. Once the condition becomes false, the loop breaks and anything after the loop is then evaluated. In Rust, it is pretty much the same.
Example
Consider the example shown below:
fn main() {
let mut z = 1;
while z < 20 {
if z % 15 == 0 {
println!("fizzbuzz");
} else if z % 3 == 0 {
println!("fizz");
} else if z % 5 == 0 {
println!("buzz");
} else {
println!("{}", z);
}
z += 1;
}
}In the above code, we are making use of the while keyword which is immediately followed by a condition ( z < 20 ) and as long as that condition is evaluated to true, the code inside the while block will run.
Output
1 2 fizz 4 buzz fizz 7 8 fizz buzz 11 fizz 13 14 fizzbuzz 16 17 fizz 19
For Range
The for in constructor provided by the Rust compiler is used to iterate through an Iterator. We make use of the notation a..b, which returns a (inclusive) to b(exclusive) in the step of one.
Example
Consider the example shown below:
fn main() {
for z in 1..20 {
if z % 15 == 0 {
println!("fizzbuzz");
} else if z % 3 == 0 {
println!("fizz");
} else if z % 5 == 0 {
println!("buzz");
} else {
println!("{}", z);
}
}
}Output
1 2 fizz 4 buzz fizz 7 8 fizz buzz 11 fizz 13 14 fizzbuzz 16 17 fizz 19
111 Views
