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Double letters

#020BasicStringsLoops4 min

For spelling cards, the kids need to know where the double letters are. Write doubled(word): count each letter that is the same as the one before it. coffee gives 2, aaa also gives 2, and an empty word gives 0.

Examples

doubled("coffee")→2

doubled("cat")→0

doubled("book")→1

The functionint doubled(const string &word)

main.cpp

#include <string>
using namespace std;

int doubled(const string &word) {
    int count = 0;
    for (int i = 1; i < word.size(); i++) {
        // your code here: if word[i] matches the one before, add 1 to count
    }
    return count;
}

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Result

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