C Programming Absolute Beginner's Guide (3rd Edition)

20. Advanced Math (for the Computer, Not You!) In This Chapter Practicing your math Doing more conversions Getting into trig an ...

Warning Although ceil() and floor() convert their arguments to integers, each function returns a float value. That’s why the dol ...

Two additional mathematical functions might come in handy, even if you don’t do heavy scientific and math programming. The pow() ...

TABLE 20.1 C Trigonometric Functions Again, it’s unlikely you will need these functions, unless you want to relearn trigonometry ...

#include <math.h> main() { printf("It's time to do your math homework!\n"); printf("Section 1: Square Roots\n"); printf("T ...

The sine of a 90-degree angle is 1.000 The tangent of a 75-degree angle is 3.732 The arc cosine of a 45-degree angle is 0.667 Th ...

You must include time.h before seeding the random number generator with the time of day, as done here. The bottom line is this: ...

// Roll the dice a second time to get your second total dice1 = (rand() % 5) + 1; dice2 = (rand() % 5) + 1; total2 = dice1 + dic ...

Not bad—you’re not even two-thirds of the way through the book, and you can call yourself a game programmer! The program is a si ...

Part IV: Managing Data with Your C Programs ...

21. Dealing with Arrays In This Chapter Reviewing arrays Putting values in arrays The really nice thing about this chapter is ...

another variable happened to be defined immediately after name, that other variable’s data will be overwritten if you try to sto ...

floating-point array. Because C is free-form, you can continue the initialization list over more than one line, as is done for a ...

Note sizeof() returns the number of bytes you reserved for the array, not the number of elements in which you have stored a valu ...

// Example program #1 from Chapter 21 of Absolute Beginner's Guide // to C, 3rd Edition // File Chapter21ex1.c /* This program c ...

So this program is designed to show you two different ways you can add values to a variable array. It’s a bit impersonal, so if ...

22. Searching Arrays In This Chapter Filling arrays Searching parallel arrays for specific values You bought this book to lear ...

At this point, it’s important for you to concentrate on what you do with arrays after the arrays get filled with values. One of ...

192.41, 389.00, 229.67, 18.31, 59.54}; /* Interact with the user looking for a balance. */ printf("\n\n*** Customer Balance Look ...

ID 891 was not found in list. ***Customer Balance Lookup*** What customer number do you need to check? 475 ** That customer's ba ...