# January 5, 2015 XX University xx College Exam questions

Source: Internet
Author: User

Six, Procedural Questions

1. Write a complex number class (operator overloading)

`#include <iostream>using namespace Std;class complex{public:complex (double r=0.0,double i=0.0): Read (R), Imag (i) {}; Complex operator+ (const Complex &C2) const; Complex operator-(const Complex &C2) const;void display () const;private:double real,imag;}; Complex complex::operator+ (const Complex &C2) Const{return Complex (REAL=C2.REAL+REAL,IMAG=C2.IMAG+IMAG);} Complex complex::operator-(const Complex &C2) Const{return Complex (REAL=C2.REAL-REAL,IMAG=C2.IMAG-IMAG);} void Complex::d isplay () const{cout<< "(" <<real<< "," <<imag<< ")" <<ENDL;} void int main () {Complex C1 (5,4), C2 (2,10),c3;cout<< "c1=" <<c1.display ();cout<< "c2=" << C2.display ();c3=c1-c2;cout<< "c3=" <<c3.display ();`

2. Write a string class--Go

`#include <iostream>using namespace Std;class string{friend ostream& operator<< (ostream&,string &);p ublic:string (const char*str=null);//Assignment and constructor string (const string &other) const;//assignment Constructor string& operator= (const string&other);//=string& operator+ (const string&other);//+bool operator== (const String &other);//==char&operator[] (unsigned int);//[]size_t size () {return strlen (m_data);} ~string (void) {delete[] m_data;}; Private:char *m_data;}; Inline string::string (const char *str) {if (!STR) m_data=0;else{m_data=new Char[strlen (str) +1];strcpy (M_DATA,STR);}} Inline string::string (const string&other) {if (!other.m_data) m_data=0;else{m_data=new Char[strlen (Other.m_data) +1];strcpy (M_data,other.m_data);}} Inline string& sting::operator= (const string&other) const{if (this!=&other) {delete []m_data;if (!other.m_ Data) M_data=0;else{m_data=new Char[strlen (other.m_data) +1];strcpy (M_data,other.m_data);}} return this;} Inline string& sting::operator+ (const String&other) const{string newstring;if (!other.m_data) {newstring=*this;} else if (!m_data) {newstring=other;} else {newstring.m_data=new Char[strlen (other.m_data) +1];strcpy (newstring.m_data,m_data); Strcat (NewString.m_data, Other.m_data);} return this;} inline bool string::operator== (const sring &s) {if (strlen (s.m_data)!=strlen (m_data)) return False;else{return strcmp (m_data,s.m_data)? False:true;}} Inline char& string::operator[] (unsigned int e) {if (E>0&&<=strlen (m_data)) return m_data[e];} ostream& operator<< (ostream& os,string& str) {Os<<str.m_data;return OS;} void Main (int argc, char const *argv[]) {string str1= "I Love" string str2= "www.oschina.net!"; o Schina str3=str1+str2;cout<<str3<<endl;cout<<str3.size () <<endl;}`

3.swap function

`#include <iostream>using namespcae std;int main (int argc, char const *argv[]) {int X=6,y=7;int *p=&x;int *q= &y;//error notation void swap (int _x,int _y) {      temp=_y;      _y=_x;      _x=temp;} Swap (x, y);//pointer void swap (int *_p,int *_q) {int *temp;temp=_p;_p=_q;_q=temp;} Swap (*P,*Q); return 0;}`

4. Bubble function

` #include <iostream>using namespace std;void   Bubblesort (int a[],int size); int main () {int array[]={34,65,12,43,67,5,78,10,3,70},k;   int len=sizeof (array)/sizeof (int);   cout<< "The orginal array is:" <<endl;   for (k=0;k<len;k++) cout<<array[k]<< ",";   cout<<endl;   Bubblesort (Array,len);   cout<< "The sorted array Are:<<endl";   for (k=0;k<len;k++) cout<<array[k]<< ",";   cout<<endl;   System ("pause"); return 0;}     void Bubblesort (int a[],int size) {int temp;                 for (int pass=1;pass<size;pass++) {for (int k=0;k<size-pass;k++) if (a[k]>a[k+1]) {                TEMP=A[K];                A[K]=A[K+1];                  A[k+1]=temp;        } cout<< "<<pass<<" after the turn of the order: ";        for (int i=0;i<size;i++) cout<<a[i]<< ",";     cout<<endl; }}`

January 5, 2015 XX University xx College Exam questions

Related Keywords:

### Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

## A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

• #### Sales Support

1 on 1 presale consultation

• #### After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

• Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.