Yes, a variable or reference can be assigned to an element of a vector in C++. Here's an example:
#include <iostream>
#include <vector>
int main()
{
std::vector<int> vec {1, 2, 3, 4, 5};
// Assigning variable to an element of vector
int& x = vec[2];
std::cout << "x: " << x << std::endl; // Output: x: 3
// Modifying the value of the element through variable reference
x = 10;
std::cout << "vec[2]: " << vec[2] << std::endl; // Output: vec[2]: 10
// Assigning reference to an element of vector
int& y = vec[4];
std::cout << "y: " << y << std::endl; // Output: y: 5
// Modifying the value of the element through reference
y = 20;
std::cout << "vec[4]: " << vec[4] << std::endl; // Output: vec[4]: 20
return 0;
}
In the above code, we first declare a vector of integers vec
with some initial values. We then create a variable reference x
and assign it the value of the third element of the vector (which has an index of 2, since indexing in C++ starts from 0). We can then modify the value of the element at index 2 of vec
by modifying the value of x
.
Similarly, we can also assign a reference y
to the fifth element of the vector, and modify the value of that element through y
.
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Asked: 2023-06-21 08:01:27 +0000
Seen: 8 times
Last updated: Jun 21 '23
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