custom tempRunnerFile for single-lines, input support

1.sample: if i pick c++/c/java code line and run i have error! what's about custom tempRunnerFile? sample:
$includes
int main(){
$tempCode
return 0;
}
or(java):
$imports
public class tempRunner{
public static void main(String[] args) $throweds {
$tempCode
}
}
2. use not OUTPUT in vscode, use custom TERMINAL what add input to program(System.in.read() in java)