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copied!<p>Your call to the function <code>berakna_histogram_abs</code> is wrong in <code>main()</code>, it should be :</p> <pre><code>berakna_histogram_abs(histogram, textRad); // ^ </code></pre> <p>The <code>[]</code> are in the function declaration to indicated that it takes an array, you don't have to use it for the function call.</p> <p>You have another error :</p> <p>The prototype of the function <code>berakna_histogram_abs</code> is :</p> <pre><code>void berakna_histogram_abs(int histogram[], int antal); // ^^^ </code></pre> <p>before you <code>main()</code> definition and </p> <pre><code>void berakna_histogram_abs(int tal[], string textRad){...} // ^^^^^^ </code></pre> <p>Also in your main you are trying to pass a string as argument, so your code should be :</p> <pre><code>void berakna_histogram_abs(int histogram[], string antal); int main() { // ... } void berakna_histogram_abs(int tal[], string textRad){ //.... } </code></pre> <p>And last thing : try to pass reference or <code>const</code> reference instead of value :</p> <pre><code>void berakna_histogram_abs(int tal[], string& textRad) // ^ </code></pre> <hr> <p>You final code should look like :</p> <pre><code>const int ANTAL_BOKSTAVER = 26; //A-Z void berakna_histogram_abs(int histogram[], const string& antal); int main() { string textRad = ""; int histogram[ANTAL_BOKSTAVER]; getline(cin, textRad); berakna_histogram_abs(histogram, textRad); return 0; } void berakna_histogram_abs(int tal[], const string& textRad) { int antal = textRad.length(); for(int i = 0; i < antal; i++){ if(textRad.at(i) == 'a' || textRad.at(i) == 'A'){ tal[0] + 1; } } } </code></pre>

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