C + + vector usage deep analysis of _c language

The C + + programming language has an application called vector, and its role is very important in practical programming. Here we will give you a detailed introduction of C + + vector related to the application skills and basic content, I hope to bring some help.

(1) vector< type > identifier;
(2) vector< type > identifier (maximum capacity);
(3) vector< type > identifier (maximum capacity, initial all values);
(4) int i[4] = {12,3,4,5};
vector< type > VI (i, i+2); The value of I index is 3;
(5) vector< vector<int> >//vi defines a 2-dimensional container; Remember to have a space, or it will be an error

vector< int >  
Line//When using, you must first initialize the vi row;  
for (int i = 0; i < i + +) 
{ 
vector.push_back (line); 
} 
The individual believes that it is good to define a two-dimensional array using vectors because the length can not be predetermined. Very good. 

(6) C + + vector sort

vector< int > VI;  
Vi.push_back (1); 
Vi.push_back (3); 
Vi.push_back (0); 
Sort (Vi.begin (), Vi.end ()); /Small to large 
reverse (vi.begin (), Vi.end ())///from the Boulevard small 

(7) Sequential access

Vector < int > vi;  
for (int i = 0; i < i + +) 
{ 
vector.push_back (i); 
}  
for (int i = 0; i < i + +)///The first invocation method 
{ 
cout <<vector[i] << "";  
} 
for (Vector<int>::iterator it = Vi.begin (); 
it!=vi.end (); it++)///The second invocation method 
{ 
cout << *it << ""; 
} 

(8) Find

Vector < int > vi;  
for (int i = 0; i < i + +) 
{ 
vector.push_back (i); 
}  
Vector < int >::interator it = find (Vi.begin (), vi.end,3); 
cout << *it << Endl; Returns the location of the value found within the container. 

(9) using arrays to initialize C + + vector

int i[10] ={1,2,3,4,5,6,7,78,8}; 
The first type of  
vector<int> VI (I+1,I+3);///from the 2nd element to the third element for 
(vector <int>::interator it = vi.begin (); 
It!= vi.end (); it++) 
{ 
cout << *it << "";  
} 

(10) Type of structural body

struct temp 
{public 
: 
string str;  
Public: 
int id; 
} TMP 
int main () 
{ 
vector <temp> t;  
Temp W1;  
W1.str = "Hellowor"; 
W1.id = 1;  
T.push_back (t1); 
cout << w1.str << "," <<w1.id <<endl;  
return 0;  
} 

The basic introduction of vector C + + is introduced here.