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for { } total = total + number; Fig. 2 Finish the for loop in Fig. 2. The loop will total the variable number six times. Given: float number; float total; int cnt;

for { } total = total + number; Fig. 2 Finish the for loop in Fig. 2. The loop will total the variable number six times. Given: float number; float total; int cnt;

C++ Programming: From Problem Analysis to Program Design
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
Problem 20PE
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### Understanding For Loops in C++ For loops are a fundamental concept in programming, allowing you to iterate over a block of code multiple times. Below is an incomplete example of a for loop designed to repeatedly add a given number to a total. ```cpp for(__________) { total = total + number; } ``` **Fig. 2** The task is to complete the for loop in Fig. 2 so that it performs the summation operation six times. The variables provided are: - `float number;` - `float total;` - `int cnt;` ### Step-by-Step Solution 1. **Initialization**: This section sets up the loop. Typically, you would initialize a counter variable. Assuming `cnt` is our counter: ```cpp int cnt = 0; // Initial value of the counter ``` 2. **Condition**: This part checks whether the loop should continue running. Since the loop is supposed to run six times: ```cpp cnt < 6; // The loop continues while cnt is less than 6 ``` 3. **Increment**: After each iteration, we need to update the counter variable. Typically, this is done as follows: ```cpp cnt++ // Increment the counter by one after each iteration ``` ### Complete For Loop By combining the above steps, the complete for loop in C++ would look like this: ```cpp for(int cnt = 0; cnt < 6; cnt++) { total = total + number; } ``` This loop initializes the counter `cnt` to 0, checks if the counter is less than 6 for each iteration, and increments the counter by 1 after every loop cycle. Inside the loop, it adds the value of `number` to `total` for each iteration. This means that if `number` is a floating-point number, it will be added to `total` six times. ### Summary **For loops** are essential in repeating a block of code multiple times based on a given condition. In the example provided, the for loop calculates the sum of a floating-point number added six times. Understanding these loops can significantly simplify repetitive tasks in programming.
Transcribed Image Text:### Understanding For Loops in C++ For loops are a fundamental concept in programming, allowing you to iterate over a block of code multiple times. Below is an incomplete example of a for loop designed to repeatedly add a given number to a total. ```cpp for(__________) { total = total + number; } ``` **Fig. 2** The task is to complete the for loop in Fig. 2 so that it performs the summation operation six times. The variables provided are: - `float number;` - `float total;` - `int cnt;` ### Step-by-Step Solution 1. **Initialization**: This section sets up the loop. Typically, you would initialize a counter variable. Assuming `cnt` is our counter: ```cpp int cnt = 0; // Initial value of the counter ``` 2. **Condition**: This part checks whether the loop should continue running. Since the loop is supposed to run six times: ```cpp cnt < 6; // The loop continues while cnt is less than 6 ``` 3. **Increment**: After each iteration, we need to update the counter variable. Typically, this is done as follows: ```cpp cnt++ // Increment the counter by one after each iteration ``` ### Complete For Loop By combining the above steps, the complete for loop in C++ would look like this: ```cpp for(int cnt = 0; cnt < 6; cnt++) { total = total + number; } ``` This loop initializes the counter `cnt` to 0, checks if the counter is less than 6 for each iteration, and increments the counter by 1 after every loop cycle. Inside the loop, it adds the value of `number` to `total` for each iteration. This means that if `number` is a floating-point number, it will be added to `total` six times. ### Summary **For loops** are essential in repeating a block of code multiple times based on a given condition. In the example provided, the for loop calculates the sum of a floating-point number added six times. Understanding these loops can significantly simplify repetitive tasks in programming.
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