38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
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// arrfun2.cpp -- functions with an array argument
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#include <iostream>
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const int ArSize = 8;
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int sum_arr(int arr[], int n);
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// use std:: instead of using directive
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int main()
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{
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int cookies[ArSize] = {1,2,4,8,16,32,64,128};
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// some systems require preceding int with static to
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// enable array initialization
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std::cout << cookies << " = array address, ";
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// some systems require a type cast: unsigned (cookies)
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std::cout << sizeof cookies << " = sizeof cookies\n";
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int sum = sum_arr(cookies, ArSize);
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std::cout << "Total cookies eaten: " << sum << std::endl;
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sum = sum_arr(cookies, 3); // a lie
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std::cout << "First three eaters ate " << sum << " cookies.\n";
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sum = sum_arr(cookies + 4, 4); // another lie
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std::cout << "Last four eaters ate " << sum << " cookies.\n";
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// std::cin.get();
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return 0;
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}
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// return the sum of an integer array
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int sum_arr(int arr[], int n)
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{
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int total = 0;
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std::cout << arr << " = arr, ";
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// some systems require a type cast: unsigned (arr)
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std::cout << sizeof arr << " = sizeof arr\n";
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for (int i = 0; i < n; i++)
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total = total + arr[i];
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return total;
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}
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