C function with no parameters behavior

In C++, void no_args() declares a function that takes no parameters (and returns nothing). In C, void no_args() declares a function that takes an unspecified (but not variable) number of parameters (and returns nothing). So all your calls are valid (according to the prototype) in C. In C, use void no_args(void) to declare a function … Read more

Difference between signature versions – V1 (Jar Signature) and V2 (Full APK Signature) while generating a signed APK in Android Studio?

It is a new signing mechanism introduced in Android 7.0, with additional features designed to make the APK signature more secure. It is not mandatory. You should check BOTH of those checkboxes if possible, but if the new V2 signing mechanism gives you problems, you can omit it. So you can just leave V2 unchecked … Read more

Can the arguments of main’s signature in C++ have the unsigned and const qualifiers? [duplicate]

The C++98 standard says in section 3.6.1 paragraph 2 An implementation shall not predefine the main function. This function shall not be overloaded. It shall have a return type of type int, but otherwise its type is implementation-defined. All implementations shall allow both the following definitions of main: int main() and int main(int argc, char* … Read more

How to get APK signing signature?

You can access the APK’s signing signature like this using the PackageManager class http://developer.android.com/reference/android/content/pm/PackageManager.html Signature[] sigs = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES).signatures; for (Signature sig : sigs) { Trace.i(“MyApp”, “Signature hashcode : ” + sig.hashCode()); } I’ve used this to compare with the hashcode for my debug key, as a way to identify whether the APK is a … Read more