Troubles with converting string to integer

[MijiGamin1]

Hello! I am very new to V, and am attempting to create a V program to take an input, turn it into an integer, and then use that integer in a for loop. Here is my code:

 //V
import readline { read_line }
fn main() {
	mut height := read_line('Number: ')! // user input goes here
	height = height.int()
	for i := 1; i <= height; i++ {
		for j := 1; j <= i; j++ {
			print('*')
		}
		println('')
	}
}

However, on attempting to run this code, I get this error:

Can't run code. The server returned an error:
code.v:5:17: error: cannot assign to `height`: expected `string`, not `int`
    3 | fn main() {
    4 |     mut height := read_line('Number: ')! // user input goes here
    5 |     height = height.int()
      |                    ~~~~~
    6 |     for i := 1; i <= height; i++ {
    7 |         for j := 1; j <= i; j++ {
code.v:6:14: error: infix expr: cannot use `string` (right expression) as `int`
    4 |     mut height := read_line('Number: ')! // user input goes here
    5 |     height = height.int()
    6 |     for i := 1; i <= height; i++ {
      |                 ~~~~~~~~~~~
    7 |         for j := 1; j <= i; j++ {
    8 |             print('*')
Exited with error status 1
Please try again.

From what I understand, the error arises from .int() attempting to turn an integer into an integer. However, there's also an error about the same variable being a string and not working in the for loop, so I'm very confused. Any and all help would be appreciated. Thanks!

[medvednikov]

height is a string, you declare it with mut height := ...

then you try to assign an int value to it.

just do height := read_line('Number: ')!.int()

[MijiGamin1]

I tried that, but it gave me the error:

Number: ================ V panic ================
   module: main
 function: main()
  message: 
     file: code.v:4
   v hash: 959c11b
=========================================
/home/admin/v/vlib/builtin/builtin.c.v:88: at panic_debug: Backtrace
/box/code.v:6: by main__main
/tmp/v_60000/code.01JXTN21ST7GPMPS8FWBHCS27T.tmp.c:18223: by main
Exited with error status 1