cpp:strings
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cpp:strings [2017/05/08 05:48] – [Μεταβολή του αλφαριθμητικού] gthanos | cpp:strings [2019/05/20 08:13] – [Η κλάση String] gthanos | ||
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===== Η κλάση String ===== | ===== Η κλάση String ===== | ||
- | Η // | + | Η // |
Δείτε το παρακάτω παράδειγμα χρήσης της κλάσης //string//: | Δείτε το παρακάτω παράδειγμα χρήσης της κλάσης //string//: | ||
Line 163: | Line 163: | ||
iterator erase (iterator first, iterator last);</ | iterator erase (iterator first, iterator last);</ | ||
| <code cpp> | | <code cpp> | ||
- | string& replace (size_t pos, size_t len, const char* s);</ | + | string& replace (size_t pos, size_t len, const char* s); |
- | | <code cpp></ | + | string& replace (size_t pos, size_t len, const string& str, |
- | | | + | |
- | | <code cpp></ | + | </ |
+ | | <code cpp>void swap (string& | ||
+ | |||
+ | < | ||
+ | # | ||
+ | #include < | ||
+ | using namespace std; | ||
+ | |||
+ | int main () { | ||
+ | string str=" | ||
+ | | ||
+ | char[] str3=" | ||
+ | string str4 = " | ||
+ | |||
+ | str+=str2; | ||
+ | str.append(str3); | ||
+ | str.append(str4); | ||
+ | cout << str; | ||
+ | } | ||
+ | </ | ||
<code cpp replace.cpp> | <code cpp replace.cpp> | ||
Line 183: | Line 202: | ||
str.replace(19, | str.replace(19, | ||
str.replace(8, | str.replace(8, | ||
- | str.replace(8, | ||
- | str.replace(22, | ||
- | |||
- | // Using iterators: | ||
- | str.replace(str.begin(), | ||
- | str.replace(str.begin(), | ||
- | str.replace(str.begin()+8, | ||
- | str.replace(str.begin()+12, | ||
- | str.replace(str.begin()+11, | ||
cout << str << endl; | cout << str << endl; | ||
+ | } | ||
+ | </ | ||
+ | |||
+ | <code cpp chicken.cpp> | ||
+ | #include < | ||
+ | #include < | ||
+ | using namespace std; | ||
+ | |||
+ | main (){ | ||
+ | string chicken (" | ||
+ | string egg (" | ||
+ | cout << " | ||
+ | cout << " and egg comes from " << egg << endl; | ||
+ | |||
+ | chicken.swap (egg); | ||
+ | cout << "After the swap, chicken comes from " << chicken; | ||
+ | cout << " and egg comes from " << egg << endl; | ||
} | } | ||
</ | </ | ||
Line 199: | Line 226: | ||
==== Σύγκριση, | ==== Σύγκριση, | ||
- | | <code cpp></ | + | | <code cpp>const char* c_str() const;</ |
- | | <code cpp></ | + | | <code cpp>const char* data() const;</ |
- | | <code cpp></ | + | | <code cpp>size_t copy (char* s, size_t len, size_t pos = 0) const;</ |
- | | <code cpp></ | + | | <code cpp>size_t find (const string& str, size_t pos = 0) const; |
- | | <code cpp></ | + | size_t find (const char* str, size_t pos = 0) const; |
- | | <code cpp></ | + | size_t find (const char* str, size_t pos, size_t n) const; |
- | | <code cpp></ | + | size_t find (char c, size_t pos = 0) const; |
- | | <code cpp></code> | + | </ |
- | | <code cpp></ | + | | <code cpp> |
+ | size_t rfind (const char* str, size_t pos = npos) const; | ||
+ | size_t rfind (const char* str, size_t pos, size_t n) const; | ||
+ | size_t rfind (char c, size_t pos = npos) const; | ||
+ | </ | ||
+ | | <code cpp>string substr (size_t pos = 0, size_t len = npos) const;</ | ||
+ | | <code cpp>int compare (const string& str) const; | ||
+ | int compare (size_t pos, size_t len, const string& str) const; | ||
+ | int compare (const char* str) const; | ||
+ | int compare (size_t pos, size_t len, const char* str) const;</ | ||
+ | <code cpp cstring.cpp> | ||
+ | #include < | ||
+ | #include < | ||
+ | #include < | ||
+ | using namespace std; | ||
+ | int main () { | ||
+ | string str (" | ||
+ | char * cstr = new char [str.length()+1]; | ||
+ | strcpy (cstr, str.c_str()); | ||
+ | |||
+ | char * p = strtok (cstr," | ||
+ | while (p!=0) { | ||
+ | cout << p << ' | ||
+ | p = strtok(NULL," | ||
+ | } | ||
+ | delete[] cstr; | ||
+ | } | ||
+ | </ |
cpp/strings.txt · Last modified: 2021/04/27 04:45 (external edit)