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vector2.cpp
Upload User: dq031136
Upload Date: 2022-08-08
Package Size: 802k
Code Size: 1k
Category:
Visual C++ Books
Development Platform:
C++ Builder
- #ifdef __BCPLUSPLUS__
- #include <iostream.h>
- #include <vector.h>
- #else
- #include <iostream>
- #include <vector>
- #endif
- using namespace std;
- typedef vector<int> INTVECTOR;
- void main(void)
- {
- // Dynamically allocated vector begins with 0 elements.
- INTVECTOR theVector;
- // Add one element to the end of the vector, an int with the value 42.
- theVector.push_back(42);
- // Show statistics about vector.
- cout << "theVector's size is: " << theVector.size() << endl;
- cout << "theVector's maximum size is: " << theVector.max_size()<< endl;
- cout << "theVector's capacity is: " << theVector.capacity() << endl;
- // Ensure there's room for at least 1000 elements.
- theVector.reserve(1000);
- cout << endl << "After reserving storage for 1000 elements:" << endl;
- cout << "theVector's size is: " << theVector.size() << endl;
- cout << "theVector's maximum size is: " << theVector.max_size()<< endl;
- cout << "theVector's capacity is: " << theVector.capacity() << endl;
- // Ensure there's room for at least 2000 elements.
- theVector.resize(2000);
- cout << endl << "After resizing storage to 2000 elements:" << endl;
- cout << "theVector's size is: " << theVector.size() << endl;
- cout << "theVector's maximum size is: " << theVector.max_size()<< endl;
- cout << "theVector's capacity is: " << theVector.capacity() << endl;
- }