Replace xib file with Main.storyboard file in App delegate class

Question

Right now project is using MainWindow.xib in App delegate class as main nib file. It has this code in main.m file

int main(int argc, char *argv[]) {

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Answer 1

Replace the last argument (nil) of the UIApplicationMain() function with the name of the app delegate class. It's generally @"AppDelegate" by default.