Exercise 5.17:Given two vectors of ints, write a program to determine  whether one vector is a prefix of the other. For vectors of unequal  length, compare the number of elements of the smaller vector. For  example, given the vectors containing 0, 1, 1, and 2 and 0, 1, 1, 2,  3, 5, 8, respectively your program should return true.This executes correctly, but I just want to get this double-checked.#include <iostream>#include <vector>using std::vector; using std::cout; using std::endl;int main(){vector<int> v1{ 0, 1, 1, 2, 3, 5, 8 };vector<int> v2{ 0, 1, 1, 2 };if (v1.size() < v2.size()){    cout << Using v1 as the prefix to v2 << endl;    for (int smallIndex = 0, largeIndex = 1; smallIndex != v1.size(); ++smallIndex, ++largeIndex){        if (v1[smallIndex] == v2[largeIndex])            cout << v1 at position  << smallIndex <<  is a prefix for v2 at postion  << largeIndex << endl;    }}else if (v1.size() > v2.size()){    cout << Using v2 as the prefix to v1 << endl;    for (int smallIndex = 0, largeIndex = 1; smallIndex != v2.size(); ++smallIndex, ++largeIndex){        if (v2[smallIndex] == v1[largeIndex])            cout << v2 at position  << smallIndex <<  is a prefix for v1 at position  << largeIndex << endl;    }}else {      //  v1.size() == v2.size() only comparing the first as the prefix to the second    cout << Size of v1 and v2 are the same, using v1 as the prefix to v2 << endl;    for (int smallIndex = 0, largeIndex = 1; largeIndex != v1.size(); ++smallIndex, ++largeIndex){        if (v1[smallIndex] == v2[largeIndex])                cout << v1 at position  << smallIndex <<  is a prefix for v2 at postion  << largeIndex << endl;        }    }}
Determine whether one vector is a prefix of the other
c++;c++11;vectors