Chapter 7: Problem 52

An application uses a two-dimensional array defined as follows. int days[29][5]; Write code that sums each row in the array and displays the results. Write code that sums each column in the array and displays the results.

Short Answer

Expert verified

Answer: To sum each row and column of a 2D array in C, we can use nested loops. For summing each row, first iterate through the rows and then through the columns, accumulating the sum of each row's elements. For summing each column, first iterate through the columns and then through the rows, accumulating the sum of each column's elements.

Step by step solution

1. Summing Each Row

The first task is to sum each row in the 2D array. To do this, we will need to iterate through every row and calculate the sum of its elements, then print the result. To achieve this, we can use nested loops. Here is the code to perform this: ```c #include int main() { int days[29][5]; // Fill the days array with sample values for (int i = 0; i < 29; i++) { for (int j = 0; j < 5; j++) { days[i][j] = i + j; } } // Calculate the sum of each row and print the result for (int i = 0; i < 29; i++) { int rowSum = 0; for (int j = 0; j < 5; j++) { rowSum += days[i][j]; } printf("Sum of row %d: %d\n", i, rowSum); } return 0; } ```

2. Summing Each Column

The second task is to sum each column in the 2D array. Again, we will need to use nested loops to traverse through each element and calculate column sums. Notice this time, the order of the loops will be reversed to properly iterate through the columns. Here is the code to perform this: ```c #include int main() { int days[29][5]; // Fill the days array with sample values for (int i = 0; i < 29; i++) { for (int j = 0; j < 5; j++) { days[i][j] = i + j; } } // Calculate the sum of each column and print the result for (int j = 0; j < 5; j++) { int colSum = 0; for (int i = 0; i < 29; i++) { colSum += days[i][j]; } printf("Sum of column %d: %d\n", j, colSum); } return 0; } ``` Now, we have two separate pieces of code that can sum each row and column in the 2D array and display the results.

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Computer Science Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

An application uses a two-dimensional array defined as follows. int days[29][5]; Write code that sums each row in the array and displays the results. Write code that sums each column in the array and displays the results.

Short Answer

Step by step solution

1. Summing Each Row

2. Summing Each Column

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Computer Science Textbooks

Databases

Data Representation in Computer Science

Data Structures

Problem Solving Techniques

Computer Programming

Algorithms in Computer Science

Study anywhere. Anytime. Across all devices.