[Reprint] The question of the Tencent Company-C + + pen

Tencent Company-C + + pen Test
This part of the Tencent C + + interview with the pen test is mainly C/s + +, DataStructure SimpleAlgorithm Operating Systemand other aspects of the basic knowledge, convenient to Tencent interview development colleagues have reference!

The written questions seem to have sizeof, trees and other multiple-choice questions.

Filling in the blanks is a complete procedure.

The supplementary question has the writing algorithm, Programming, database SQL statement query.

There is also an open problem with C + +.

Tencent/C + + pen questions are as follows:

1, please define a macro, compare the size of the two number A, B, you can not use greater than, less than, if statement

#define MAX (A,B) (A/b)? a:b

2. How to output the header of the source file and the number of rows currently executing

int line = __line__;

char *file = __file__;

cout<< "file name is" << (file) << ", Line is" <

3, two numbers multiplied, the number of digits after the decimal point is not limited, please write a high-precision algorithm

4. Write a virus

while (1)

{

int *p = new int[10000000];

}

5, do not use extra space, will be a, b two linked list of elements of * merge

6, the tree serialization to exist in the array or list

struct st{

int i;

Short S;

char c;

};

sizeof (struct ST);

7,

char * p1;

void * P2;

int p3;

Char p4[10];

sizeof (P1...P4) =?

8,

4,4,4,10

Two-point Search

Quick Sort

Delete node of bidirectional linked list

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Interview is basically related to the project, and on the spot to say a few program problems output, can not use draft paper