"c++ get vector element by index" Code Answer's
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c++ get vector element by index
vectorName[5];
// Simple
vector by index c++
// vector::operator[]
#include <iostream>
#include <vector>
int main ()
{
std::vector<int> myvector (10); // 10 zero-initialized elements
std::vector<int>::size_type sz = myvector.size();
// assign some values:
for (unsigned i=0; i<sz; i++) myvector[i]=i;
// reverse vector using operator[]:
for (unsigned i=0; i<sz/2; i++)
{
int temp;
temp = myvector[sz-1-i];
myvector[sz-1-i]=myvector[i];
myvector[i]=temp;
}
std::cout << "myvector contains:";
for (unsigned i=0; i<sz; i++)
std::cout << ' ' << myvector[i];
std::cout << '\n';
return 0;
}
Source: www.cplusplus.com
cpp access vector by index
std::vector<int> vecOfNums{ 1, 4, 5, 22, 33, 2, 11, 89, 49 };
// Access element at index 3
int & element = vecOfNums[3];
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