I’m staring to learn C, and via help of youtube I could download 6.3.0 compiler version, though my textbook is referring to 4.3.3.

I’m purposefully trying to get warnings (as a task to learn to interpret them) for a Hello World program without getting an error, but I don’t get any.
I took away return(0) and then took away the second quote mark in printf, but PowerShell just executes the program after compilation without giving me any warnings.

I tried -W, -Wall, -Wextra, -Wreturn-type and even found -Wdouble-promotion, but to no success.

Original code:

/*
 * program that writes 'hello world'
 */

#include <stdio.h>

int main()
{
   printf("Hello, world!n");
   return 0;
}

Program code for testing out warnings:

#include <stdio.h>

int main()
{
   printf("Hello, world!n);
   /*  took away the second quote mark
    *  and the return(0) operation 
    *  to test warnings
    */
}

Compiling and running the program results in

> gcc -Wall -o warning hello_warning.c
PS C:UserssofyaOneDriveДокументыпрограммки> ./warning
Hello, world!

Instead of giving me as well some of the warnings my textbook suggests, such as:

warning: missing terminating " character