Q:

Rust program to calculate the subtract a number from another number using generic function

belongs to collection: Rust Generics Programs

YasminRadwan26
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2022-07-20
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In this program, we will create a generic function to calculate the subtraction of a given number and print the result.

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YasminRadwan26
2022-07-20
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Program/Source Code:

The source code to calculate the subtraction of two numbers using a generic function is given below. The given program is compiled and executed on UBUNTU 18.04 successfully.

// Rust program to calculate the subtract a number 
// from another number using generic function

use std::ops::Sub;

fn Subtract<T:Sub<Output = T> + Copy> (num1: T, num2: T) -> T {
    return num1 - num2;
}

fn main() {
    let result1 = Subtract(40,20);
    println!("Subtraction is: {:?}", result1);
    
    let result2 = Subtract(40.23,20.45);
    println!("Subtraction is: {:?}", result2);
}

Output:

Subtraction is: 20
Subtraction is: 19.779999999999998

Explanation:

In the above program, we created a generic function to calculate the subtraction of given numbers. The generic function is given below,

fn Subtract<T:Sub<Output = T> + Copy> (num1: T, num2: T) -> T {
    return num1 - num2;
}

In the main() function, we called the Subtract() function and printed the result.

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