Given an char variable last that has been initialized to a lowercase letter, write a loop that displays all possible combinations of two letters in the range 'a' through last. The combinations should be displayed in ascending alphabetical order: For example, if last was initialized to 'c' the output should be aa ab ac ba bb bc ca cb cc

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Click on the title for the solution
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This is the answer:

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for (char outterChar='a'; outterChar <=last; outterChar++){
    for (char innerChar='a'; innerChar <=last; innerChar++){
        cout << outterChar << innerChar << "\n";
    }
}

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