sizeof (char) = 1 sizeof (signed char) = 1 sizeof (unsigned char) = 1 sizeof (short) = 2 sizeof (signed short) = 2 sizeof (unsigned short) = 2 sizeof (int) = 4 sizeof (signed int) = 4 sizeof (unsigned int) = 4 sizeof (long long) = 8 sizeof (signed long long) = 8 sizeof (unsigned long long) = 8 sizeof (float) = 4 sizeof (double) = 8