For example, if a = 2 and x = 4, the values will be 2, 4, 16, and 256, which are way bigger than you want them to be. To fix this, try changing your loop so that you have a secondary variable, initially set to 1, that you keep multiplying by a.

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For loop in C Programming. Looping is a process of repeating a certain group of statements until a specified condition is satisfied. There are three types of loop in C. They are: while loop. We can use break statement to exit from an infinite loop.
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I need some help. I want to compute a^x given real value a and positive value integer x.

Examples Of C Programs Using For Loop

My program:

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4 Answers

Take a look at this loop:

Every time you go through this loop, you multiply a by itself. Let's suppose the user enters number a₀. Then:

After 0 iterations, a has value a₀.
After 1 iteration, a has value a₀²
After 2 iterations, a has value a₀⁴
After 3 iterations, a has value a₀⁸
..

For example, if a = 2 and x = 4, the values will be 2, 4, 16, and 256, which are way bigger than you want them to be.

To fix this, try changing your loop so that you have a secondary variable, initially set to 1, that you keep multiplying by a. That way, you don't change what value you're multiplying by on each iteration.

Next, note that your loop is running too many times. Since you loop up to and including x, your loop runs x + 1 times, so if you want to compute a^x you will get the wrong value. Try changing this to loop exactly x times.

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Finally, your print statement runs on each iteration, so you'll see all the intermediary values. Change the code so that the print statement is outside the loop.

After doing all that, do look up the pow function. If this is for an assignment you might not be able to use this function, but it's the easiest way to solve this problem.

Hope this helps!

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There are a couple of errors:

this will loop for x+1 times, not what you intended.

every time you do this, a is the value that is already multiplied, so you need another variable to store the result.

One last note, to calculate a^x, int may be too small for many practical cases, consider a bigger type like long long.

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Different Examples Of C Programs

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A more 'fun' method would be to use a template:

To get the result:

Examples Of C Program Using Do While Loop

I thought it obvious, but just for clarification: This method requires that you know the exponent at compile-time.

Since std::pow exists, it is a bit silly to use a loop, but it can be done:

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With C programming, you can stick inside a for loop is another for loop. It may seem crazy to loop within a loop, but it’s a common practice. The official jargon is nested loop. A Nested Loop shows an example.

A NESTED LOOP

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For Each Loop C# Examples

Don’t let all the indents intimidate you; they make the code more readable. Indents also help show which statements belong to which for loop because they line up at the same tab stop.

Line 7 in A Nested Loop begins the first, outer for loop. It counts from letters A to G. It also contains the second, inner for loop and a putchar() function on Line 13. That function helps organize the output into rows by spitting out a newline after each row is displayed.

The printf() function in Line 11 displays the program’s output, specifying the outer loop value, alpha, and the inner loop value, code. The t escape sequence separates the output.

Exercise 11: Type the source code from A Nested Loop into your editor. Build and run.

A triple nested loop contains three for statements, which continues the cascade shown in A Nested Loop. As