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Hello Guys! Now, You are going to subtract two numbers using a generic function in rust program. Firstly I wish to share about rust generic function. It is nothing but describes anything that accepts one or more generic type parameters <T>.

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

This is a source code for subtract two numbers in rust program using the generic function.

// 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);
}

Program Execution

1. Initially, You need to create the generic function to subtract two numbers like given below:

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

2. After that, The two given numbers will be subtracted using the main subtract() function and the output will be displayed on the screen using the printIn() function.

output

Subtraction is: 20
Subtraction is: 19.779999999999998

Conclusion

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