What is the output of the following code? #include <iostream> using namespace std;int main() {    int matrix[4][4] =      {{1, 2, 3, 4},      {4, 5, 6, 7},      {8, 9, 10, 11},      {12, 13, 14, 15}};     int sum = 0;       for (int i = 0; i < 4; i++)        sum += matrix[i][i];     cout << sum << endl;return 0; }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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What is the output of the following code?

#include <iostream> using namespace std;
int main()

{
    int matrix[4][4] =

     {{1, 2, 3, 4},

     {4, 5, 6, 7},

     {8, 9, 10, 11},

     {12, 13, 14, 15}};
     int sum = 0;
       for (int i = 0; i < 4; i++)

       sum += matrix[i][i];
     cout << sum << endl;
return 0;

}

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