How to replace specific values in a vector in C++?

Question

I have a vector with some values (3, 3, 6, 4, 9, 6, 1, 4, 6, 6, 7, 3), and I want to replace each 3 with a 54 or each 6 with a 1, for example and so on.

So I need to

Answer 1

You could loop through each element of the list.

std::vector vec{3, 3, 6, 4, 9, 6, 1, 4, 6, 6, 7, 3};
for(int n=0;n