北京愛恩科技筆試題

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北京愛恩科技筆試題

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北京愛恩科技筆試題

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Date :________________________
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VISUAL BASIC SECTION

Q1 : Grade yourself on your Visual Basic Skill ?
1 – poor …….. 10- Advance player

Ans:

Q2 : Declare Function Multiply_Add Lib “test” (ByRef A as integer ,VeRef B as integer , ByVal c as integer ) as integer

Q2.1: Explain what is Declare Function used for ?

Ans :

Q2.2 : Explain the difference between ByRef and ByVal ?

Ans :

Q3 : Is Visual Basic a COMPILER or an INTERPERTER ?

Ans

C++ SECTION

Q4 :
int iVal1 = 0, iVal2 = 0;
int * ipVal;

ipVal = &iVal1; What is the Value of ipVal = *ipVal =

ipVal = (int*)iVal1; What is the Value of ipVal = *ipVal =

iVal2 = (int)&iVal1; What is the Value of ipVal = *ipVal =

Q5:
void SwapAB(int A, int B)
{
A=B;
B=A;
}

int main()
{
int A,B;
A=1;
B=2;
SwapAB(A,B);
return 0; // A= ?, B= ?
}

What is the value of A and B ?

What is the difference between STRUCTURE and OBJECT ORIENTED PROGRAMMING ?

What is the difference between C and C++ ?

What is an interpreter ?

Q6. Step through the following C code and answer the questions

void FillMem(unsigned char *pData, unsigned char len)
{
while (len--) *pData++ = len;
}

void main()
{
   unsigned char buffer1[8];
   unsigned char buffer2[8];
   unsigned char * pData;
   unsigned char cnt1, cnt2;

for (cnt1 = 0; cnt1 < 8; cnt1++)
buffer1[cnt1] = 0xFF;

   for (cnt1 = 0; cnt1 < 8; cnt1++)
      buffer2[cnt1] = 0xFF;

   for (cnt1 = 0, cnt2 = 4; cnt1 < 4; cnt1++, cnt2--)
     buffer1[cnt1] = cnt1;
     buffer2[cnt2] = cnt2;

   /***************************************************************
   Q What is the content of buffer1 & buffer2 ?
   buffer1[0] =      ??      buffer2[0] =             ??
   buffer1[1] =     ??      buffer2[1] =             ??
   buffer1[2] =       ??      buffer2[2] =             ??
   buffer1[3] =       ??      buffer2[3] =              ??

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北京愛恩科技筆試題