- #include <iostream> 
- #include <vector> 
- using namespace std; 
-   
- int main(){ 
-   
-     vector<int>::iterator it; 
-     vector<int> vec2(4); 
-   
-     it  = vec2.begin(); 
-     it = vec2.insert(it, 45); 
-     ++it;                       
-     it = vec2.insert (it,23); 
-   
-     for(it = vec2.begin(); it!= vec2.end(); ++it) 
-             cout << " "<<*it<<endl; 
-     return 0; 
- } 
-   
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