39 lines
979 B
Rust
39 lines
979 B
Rust
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use std::io;
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fn get_input()->u32
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{
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loop
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{
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let mut input = String::new();
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io::stdin()
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.read_line(&mut input)
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.expect("Failed to read line");
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match input.trim().parse()
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{
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Ok(num) => return num,
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Err(_) =>
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{
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println!("Expected Valid Number");
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}
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};
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}
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}
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fn fibo(val:u32)->u128
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{
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let mut a = 0;
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let mut b = 1;
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let mut c;
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for _element in 2..=val
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{
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c = a+b;
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a = b;
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b = c;
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}
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return b;
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}
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fn main()
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{
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println!("Hello, world!");
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println!("Give a Number for Fibonacci Calculation ↓");
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println!("Result = {}",fibo(get_input()));
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}
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