Assigning keys to plaintext with ASCII

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 for (int i = 0; i < countstring; i++) //starts with first character of plaintext till the end
{
    for (int c = 0; c < 25; c++)
    {
        if (s == argv[1])
        {
        s == int argv[1][65 + c];
        }
     }
}
printf("ciphertext: %s", s);

			

Seeking help what is wrong with s == int argv[1][65 + c];

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Reply

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assignment operation = is different than equality condition ==

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Query

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s == int argv[1][65 + c];

Do you mean, it should be:

s = int argv[1][65 + c];

instead of:

s == int argv[1][65 + c];

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Reply

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aren’t you trying to “assign” the value of argv[][] to s[]?

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Query

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Yes.

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Reply

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then use assignment operator[learn_press_profile]

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