Chapter 7: Problem 49

Write a statement that defines a two-dimensional array to hold three strings. Initialize the array with your first, middle, and last names.

Short Answer

Expert verified

Answer: To store and initialize three strings representing the first, middle, and last names of an individual in a 2D array in C++, follow these steps: 1. Define a 2D array with the 'string' data type and a size of 3x1: ```cpp string names[3][1]; ``` 2. Initialize the 2D array with the given first, middle, and last names using the assignment operator (=): ```cpp names[0][0] = "John"; names[1][0] = "James"; names[2][0] = "Doe"; ``` Refer to the provided solution for an optional step that demonstrates how to display the initialized array.

Step by step solution

Define a 2D array to hold three strings

To define a 2D array in C++, we need to specify its data type (in this case, 'string'), the number of rows and columns. Since we want to store three names, we need a 3x1 array: ```cpp string names[3][1]; ```

Initialize the 2D array with the first, middle, and last names

Now, we need to initialize the 2D array with the given first, middle, and last names. We will use the assignment operator (=) to assign the names to the array's elements: ```cpp names[0][0] = "John"; names[1][0] = "James"; names[2][0] = "Doe"; ```

Display the initialized array (optional)

This step is optional but useful to visualize the stored data in our array. We can use a loop or simply print all elements one by one: ```cpp #include using namespace std; int main() { string names[3][1]; names[0][0] = "John"; names[1][0] = "James"; names[2][0] = "Doe"; for(int i = 0; i < 3; ++i) { cout << "names[" << i << "][0] = " << names[i][0] << endl; } return 0; } ``` In this solution, we used a for loop to iterate through the rows of the 2D array and output the strings.

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Write a statement that defines a two-dimensional array to hold three strings. Initialize the array with your first, middle, and last names.

Short Answer

Step by step solution

Define a 2D array to hold three strings

Initialize the 2D array with the first, middle, and last names

Display the initialized array (optional)

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