/C++程序员面试秘籍

1、函数返回的参数引用

[cpp] view
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#include "stdafx.h"
#include <iostream>
#include <set>
using namespace std;
float f;
const float pi=3.14f;
float f1(float r)
{
f=r*r*pi;
return f;
}
float& f2(float r)
{
f=r*r*pi;
return f;
}
int main()
{
float f1(float=5);//相当于是函数执行了一遍，没有返回值，但是为什么形参可以这样写呢，还要加上float
float& f2(float=5);
float a=f1();//为什么不用参数也可以匹配到
//float& b=f1();
float c=f2();
float& d=f2();
d+=1.0f;
cout<<a<<" "<<" "<<c<<" "<<d<<endl;
return 0;
}

这里不明白其用法，需要好好看下书。

2、指针与数组

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int *a=new int[5]();//数组指针
int *c[5];//指针数组，一般作为函数指针
int (*b)[10]
以及二维动态数组的创建又忘了

3、华为题1

计算最大数字连串的问题

http://www.meilijia.com/collection/862163

http://www.meilijia.com/collection/862164

http://www.meilijia.com/collection/862165

http://www.meilijia.com/collection/862166

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http://www.meilijia.com/collection/862168

http://www.meilijia.com/collection/862169

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http://www.meilijia.com/collection/862173

http://www.meilijia.com/collection/862174

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http://www.meilijia.com/collection/862177

http://www.meilijia.com/collection/862178

http://www.meilijia.com/collection/862179

http://www.meilijia.com/collection/862180

http://www.meilijia.com/collection/862181

http://www.meilijia.com/collection/862182

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