WEBVTT

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(upbeat music)

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- [Instructor] I hope you enjoyed this exercise

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as it require you to write quite a few lines of code

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as shown here in my solution.

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Your solution need not look exactly like this.

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Lines Eight through 11 are prompting for input.

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First value a and then value b,

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and the two floating point variables are defined here.

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Floating points are necessary because of the division

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that's required as part of the solution.

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Lines 13 through 16, display the mathematical calculations,

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addition, subtraction, multiplication, and division.

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The power function is used at line 17 to obtain the power

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of base a raise to exponent b.

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Then two square root functions are required,

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one to obtain the square root of a,

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the second to obtain these square root of b.

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Let me run my solution.

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And I'm going to type in some low values to make sure

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that things don't get too crazy.

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Three and four and three plus four is seven,

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three minus four is negative one, three times four,

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you see that it all looks like, well, the square roots,

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I know that the one for four is correct.

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I'll assume that the one for three is also correct.

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Potential warnings or errors you may have encountered during

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this challenge include; missing semi-colons.

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all see language statements in with a semi-colon.

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You might've forgotten the weird ampersand

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that appears in the scan F function.

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You might have missed some parenthesis here or there.

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Emitting an argument in the print F function,

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one that doesn't match up exactly with the variable argument

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specified is another common error.

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You might've forgotten to include the math.h header file,

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which is required for the power and square root functions.

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You could also have forgotten the return at the end

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of the main function.

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Take such errors in stride.

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We all make them and it's just part of the learning process.

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The compiler alerts you with warnings and errors

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showing you which line they've occurred in.

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The messages may be crypticted now, but as you learn C,

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you'll understand them, fix your code and eventually become

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a great C language programmer.