Code:
// a.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

int main(int argc, char* argv[])
{
	printf("Hello World!\n");
	printf( "my age is 20!\n" );
	printf( "my name is %s.\n", "abiao zhan");
	printf( "my english score is %c.\n", 'A' );
	return 0;
}