C++/Vector/vector definition
Storing Specific Values in an Existing Container
#include <string>
#include <vector>
#include <iostream>
using namespace std;
template <class T>
void print(T& c){
for( typename T::iterator i = c.begin(); i != c.end(); i++ ){
std::cout << *i << endl;
}
}
int main( )
{
const char* s[] = { "A", "B", "C", "D", "Don"t know" };
vector<string> answers( s, s+ sizeof( s ) / sizeof( s[0] ) );
print( answers );
const char* s1[] = { "A", "C", "B","D", "V", "O" };
answers.assign( s1, s1 + sizeof( s1 ) / sizeof( s1[0] ) );
print( answers );
}
vector declaration
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <iomanip>
using std::setw;
#include <vector>
using std::vector;
int main()
{
vector< int > integers1( 7 ); // 7-element vector< int >
vector< int > integers2( 10 ); // 10-element vector< int >
size_t i;
cout << integers1.size() << endl;
for ( i = 0; i < integers1.size(); i++ ){
cout << integers1[ i ];
}
cout << integers2.size() << endl;
for ( i = 0; i < integers2.size(); i++ ){
cout << integers2[ i ];
}
for ( size_t i = 0; i < integers1.size(); i++ )
integers1[ i ] = i;
for ( size_t i = 0; i < integers2.size(); i++ )
integers2[ i ] = i;
for ( i = 0; i < integers1.size(); i++ ){
cout << integers1[ i ];
}
for ( i = 0; i < integers2.size(); i++ ){
cout << integers2[ i ];
}
return 0;
}
/*
7
000000010
000000000001234560123456789
*/
vector"s copy constructor
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <iomanip>
using std::setw;
#include <vector>
using std::vector;
int main()
{
vector< int > integers1( 7 ); // 7-element vector< int >
vector< int > integers2( 10 ); // 10-element vector< int >
size_t i;
for ( i = 0; i < integers1.size(); i++ ){
cout << integers1[ i ];
}
for ( i = 0; i < integers2.size(); i++ ){
cout << integers2[ i ];
}
vector< int > integers3( integers1 ); // copy constructor
cout << integers3.size() << endl;
for ( i = 0; i < integers3.size(); i++ ){
cout << integers3[ i ];
}
return 0;
}
/*
000000000000000007
0000000
*/