Hi there! I have this following C++ code and I am using a Mac. How do I fix these errors shown with red in the image below?

#include

#include

#include

using namespace std;

int main() {

string key;

string text;

cout ​`oaicite:{"index":0,"invalid_reason":"Malformed citation >"}`​ key;

if (key.length() != 26) {

cout

return EXIT_FAILURE;

}

for (int i = 0; i

if (!isalpha(key[i]) || !islower(key[i])) {

cout

return EXIT_FAILURE;

}

}

bool alphabet[26] = { false };

for (int i = 0; i

alphabet[key[i] - 'a'] = true;

}

for (int i = 0; i

if (!alphabet[i]) {

cout

return EXIT_FAILURE;

}

}

cout ​`oaicite:{"index":1,"invalid_reason":"Malformed citation >"}`​ text;

for (int i = 0; i

if (!isalpha(text[i]) || !islower(text[i])) {

cout

return EXIT_FAILURE;

}

}

for (int i = 0; i

text[i] = key[text[i] - 'a'];

}

cout

return EXIT_SUCCESS;

}