print-functions.cpp

// These are the functions I used for printing out the arrays
// And vectors. Maybe you will find them useful

void PrintIntVector(vector<int> vec) {
    cout << "[";
    for (unsigned i = 0; i < vec.size(); ++i) {
        cout << vec.at(i);
        if (i < vec.size() - 1) {
            cout << ", ";
        }
    }
    cout << "]\n";
}
void PrintIntArray(int arr[], int size) {
    cout << "[";
    for (unsigned i = 0; i < size; ++i) {
        cout << arr[i];
        if (i < size - 1) {
            cout << ", ";
        }
    }
    cout << "]\n";
}

zybooks-11.27.cpp

#include <iostream>
using namespace std;

int RandIntInRange(int min, int max) {
	return rand() % (max - min + 1) + min;
}

int main(){
    // We use srand(5) to ensure the pattern of random numbers is the same
    // each time the program is run. This is so the zyBooks autograder can
    // accurately grade a consistent output. In a real program this would
    // more likely be srand(time(0))
    srand(5);
	
    const int ARRAY_SIZE = 5;
	
    // Create 2D array of ARRAY_SIZE x ARRAY_SIZE
    // Arrays created without instantiation = {...}
    // are filled with unknown "junk" data.
    int array[ARRAY_SIZE][ARRAY_SIZE];
    
    // Fill with random numbers
    // Iterate over rows
    for (int row = 0; row < ARRAY_SIZE; ++row) {
        // Iterate over each column in the row
        for (int col = 0; col < ARRAY_SIZE; ++col) {
            // At this row,column set that value in the array to a
            // random number between 10 and 50 inclusive.
            array[row][col] = RandIntInRange(10, 50);
        }
    }
	
    // Print out numbers
    for (int row = 0; row < ARRAY_SIZE; ++row) {
	    for (int col = 0; col < ARRAY_SIZE; ++col) {
            cout << array[row][col] << " ";
        }
        cout << endl;
    }
	
    // Sum the numbers
    int sum = 0;
    for (int row = 0; row < ARRAY_SIZE; ++row) {
        for (int col = 0; col < ARRAY_SIZE; ++col) {
            sum += array[row][col];
        }
    }
    
    cout << "The sum of all the values is: " << sum << endl;
    
    // This could be done in a single nested for loop, but I
    // split it into three for clarity.
}