Check if string element is not an element of a vector of strings

[BJKY0712]

How can I check if a string isn´t an element of a vector of strings. The idea is, if the current string isn´t an element of that vector, it should be added to it.
I tried using a for loop, but apprently I somehow got it wrong. Here is what I did:

for (int i = 0; i < operations.size(); i++){
if (entry != operations[i]){
operations.push_back(entry);
results.push_back(temp);
}
else{
entry.clear();
}
}

[Peter87]

BJKY0712 wrote:

for (int i = 0; i < operations.size(); i++){
	if (entry != operations[i]){
		operations.push_back(entry);
		results.push_back(temp);
	}
	else{
		entry.clear();
	}
}

It looks like you're trying to do two things at the same time, (1) check if the vector contains the string, and (2) insert the string. It's easier to get right if you treat these as two separate steps.

I suggest you write a loop that only has the one purpose to check if the string is inside the vector or not (you might want to put this into a separate function). Then you can use the result of that loop (or function) to decide whether you should add the string to the vector.

[seeplus]

Something like:

const auto itr {std::find(operations.begin(), operations.end(), entry)};

if (itr == operations.end())
    operations.push_back(entry);

Have you considered using a std::set instead?