Problem with programming "C" on MacBook Air (Intel Prozessor) "Undefined Symbols for architecture x86_64:

Hello, I've got problems with programming "C" on my MacBook Air (Intel Prozessor).

When I write following code:

#include <stdio.h>

struct Haustier{

char tier [50];

char name [20];

int alter;

float groesse;

};

void printHaustier (struct Haustier h){

printf ("Das Haustier heißt %s, ist %i; Jahre alt und %.2f cm gross.", h.name, h.alter, h.groesse);

}

int main(){

struct Haustier h;

h.name[0]= 'f';

h.name[1]= 'l';

h.name[2]= 'o';

h.alter=55;

h.groesse= 6.22;

printfHaustier(h);

return 0;

}

It prints out following problems:

Undefined symbols for architecture x86_64:

"_main", referenced from:

<initial-undefines>

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

As far as I've researched about problem, it seems to be the wrong installation path for my operating system. Something about the mixing of two different toolchains: C compiler and linker and runtime...? (actually I don't know anything about that, I am a bloody beginner).

The interesting thing is that I actually was careful about the operating system (Intel vs M1/M2 Chips) and installed as far as I know VisualStudioCode for architecture x86_64. And then adding the Install-packs: "Code runner" and "C/C++".

When I try another basic code like:

#include <stdio.h>

int main() {

printf("Hello World!");

return 0;

}

It actually prints out the "Hello World".

I don't know what I did wrong and how I could save that problem. Any Help? Thank you!