rust nested loop

To create a nested loop in Rust, you can use the for loop within another for loop. Here's an example:

fn main() {
    for i in 1..=3 {
        for j in 1..=3 {
            println!("i: {}, j: {}", i, j);
        }
    }
}

In this example, we have two for loops. The outer loop iterates over the values 1 to 3 (inclusive) and assigns each value to the variable i. The inner loop also iterates over the values 1 to 3 (inclusive) and assigns each value to the variable j. Inside the inner loop, we print the values of i and j.

When you run this code, it will output the following:

i: 1, j: 1
i: 1, j: 2
i: 1, j: 3
i: 2, j: 1
i: 2, j: 2
i: 2, j: 3
i: 3, j: 1
i: 3, j: 2
i: 3, j: 3

This demonstrates how the nested loop executes the inner loop completely for each iteration of the outer loop.

I hope this helps! Let me know if you have any further questions.