CODEWITHSUNDEEP
c++arrays
Jake Smith
Jake Smith

Reputation: 199

C++ comparing a string with an array of strings

if I have:

const string food[] = {"Burgers", "3", "Fries", "Milkshake"}
string word;
cin >> word;

How can I compare word with the correct food? or rather, if the user inputs "Fries", how can I compare that with the string array?

Upvotes: 2

Views: 1968

Answers (2)

Mike Seymour
Mike Seymour

Reputation: 254431

With the find algorithm from <algorithm>:

auto found = std::find(std::begin(food), std::end(food), word);
if (found == std::end(food)) {
    // not found
} else {
    // found points to the array element
}

or with a loop:

for (const auto &item : food) {
    if (item == word) {
        // found it
    }
}

although, if you need to do this a lot, it might be better to store the items in a data structure designed for quick searches: std::set or std::unordered_set.

Upvotes: 3

Kerrek SB
Kerrek SB

Reputation: 476970

With find:

#include <algorithm>
#include <iterator>

auto it = std::find(std::begin(food), std::end(food), word);

if (it != std::end(food))
{
    // found *it
}
else
{
    // not found
}

Upvotes: 7

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