nguyenloi1211

### Keybase proof

I hereby claim:

  * I am nguyenloi1211 on github.
  * I am nguyenphuocloi (https://keybase.io/nguyenphuocloi) on keybase.
  * I have a public key ASDEJU54U9lHe5DiZK9Q-93fY4uMTUFXn2p8mgMqHkpgvgo

To claim this, I am signing this object:

nguyenloi1211

#include <stdio.h>
int main()
{
   // printf() displays the string inside quotation
   printf("Hello, World!");
   return 0;
}