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C/C++ 笔试、面试题目大汇总

[10-10 21:21:19]   来源：http://www.77xue.com  笔试题目   阅读：8595次
概要：return 0;}int fn3(){printf( "is " );return 0;}int fn4(){printf( "This " );return 0;}The _onexit function is passed the address of a function (func) to be called when the program terminates normally. Successive calls to _onexit create a register of functions that are executed in LIFO (last-in-first-out) order. The functions passed to _onexit cannot take parameters.38. 如何判断一段程序是由C 编译程序还是由C++编译程序编译的？答案：#ifdef __cpluspluscout<&
C/C++ 笔试、面试题目大汇总,标签：驾照笔试题目,腾讯笔试题目,http://www.77xue.com
return 0;

}

int fn3()

{

printf( "is " );

return 0;

}

int fn4()

{

printf( "This " );

return 0;

}

The _onexit function is passed the address of a function (func) to be called when the program terminates normally. Successive calls to _onexit create a register of functions that are executed in LIFO (last-in-first-out) order. The functions passed to _onexit cannot take parameters.

38. 如何判断一段程序是由C 编译程序还是由C++编译程序编译的？

答案：

#ifdef __cplusplus

cout<<"c++";

#else

cout<<"c";

#endif

39.文件中有一组整数，要求排序后输出到另一个文件中

答案：

＃i nclude<iostream>

＃i nclude<fstream>

using namespace std;

void Order(vector<int>& data) //bubble sort

{

int count = data.size() ;

int tag = false ; // 设置是否需要继续冒泡的标志位

for ( int i = 0 ; i < count ; i++)

{

for ( int j = 0 ; j < count - i - 1 ; j++)

{

if ( data[j] > data[j+1])

{

tag = true ;

int temp = data[j] ;

data[j] = data[j+1] ;

data[j+1] = temp ;

}

}

if ( !tag )

break ;

}

}

void main( void )

{

vector<int>data;

ifstream in("c:\\data.txt");

if ( !in)

{

cout<<"file error!";

exit(1);

}

int temp;

while (!in.eof())

{

in>>temp;

data.push_back(temp);

}

in.close(); //关闭输入文件流

Order(data);

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