# Change contents of vector through an iterator : vector iterator « Vector « C++

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 C++ » Vector » vector iterator Screenshots
Change contents of vector through an iterator
 ```      #include  #include  #include  using namespace std; int main() {   vector v(10); // create a vector of length 10   vector::iterator p; // create an iterator   int i;   // assign elements in vector a value   p = v.begin();   i = 0;   while(p != v.end()) {     *p = i + 'a';     p++;     i++;   }   // display contents of vector   cout << "Original contents:\n";   p = v.begin();   while(p != v.end()) {     cout << *p << " ";     p++;   }   cout << "\n\n";   // change contents of vector   p = v.begin();   while(p != v.end()) {     *p = toupper(*p);     p++;   }   // display contents of vector   cout << "Original contents:\n";   p = v.begin();   while(p != v.end()) {     cout << *p << " ";     p++;   }   cout << "\n\n";   return 0; } /*  Original contents: a b c d e f g h i j Original contents: A B C D E F G H I J  */                      ```
Related examples in the same category
 1 Display contents of vector through an iterator 2 Use const_iterator to loop through the vector 3 interator operator for vector 4 Loop through all elements in a vector in reverse order by using rbegn, rend 5 vector.begin, vector.end returns the iterators 6 const_iterator from different containers