Tiplarni dinamik tarzda

O‘zgarmas iteratorlar. Agar konteynerda o‘zgarmas qiymatli elementlar bo‘lsa, bu holda konteyner elementlariga murojaat qilish uchun o‘zgarmas iteratorlardan foydalanishsh kerak. Buning uchun const_iteratop tipi ishlatiladi. Bu iteratorlar faqat elementlarni sanash imkonini beradi. O‘zgartirish mumkin emas.

vector::const_iterator iter ; for(iter = myvector.begin(); iter!=myvector.end(); ++iter) {cout << *iter << " | "; //*iter = (*iter) * (*iter); }

O‘zgarmas iteratorning qiymatlarini olish uchun cbegin() va cend() funksiyalari ham ishlatiladi. Agar iterator o‘zgarmas deb olinmagan bo‘lsa ham, bu funksiyalar uni o‘zgarmas qilib beradi. Shungdek, o‘zgartirish mumkin emas bo‘ladi.
5.8-dastur. O‘zgarmas iteratordan foydalanish.

// ConsoleApplication1.cpp : main project file. #include "stdafx.h" #include #include using namespace std; int main(){ int myints[] = {16,2,77,29,28}; const vector myvector (myints, myints + sizeof(myints) / sizeof(myints[0]) ); vector myvector_one; for (int i = 0; i < 15; i++) myvector_one.push_back(rand() % 10); vector::const_iterator it;

for (it = myvector.begin(); it != myvector.end(); ++it) cout << ' ' << *it; cout << endl; for (it = myvector_one.cbegin(); it != myvector_one.cend(); ++it) cout << ' ' << *it; cout << endl; system("pause"); return 0; }

5.8-dastur.Output

16 2 77 29 28 1 7 4 0 9 4 8 8 2 4 5 5 1 7 1