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Computer Science: A Structured Programming Approach Using C1 4-5 Standard Functions C provides a rich collection of standard functions whose definitions.

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Presentation on theme: "Computer Science: A Structured Programming Approach Using C1 4-5 Standard Functions C provides a rich collection of standard functions whose definitions."— Presentation transcript:

1 Computer Science: A Structured Programming Approach Using C1 4-5 Standard Functions C provides a rich collection of standard functions whose definitions have been written and are ready to be used in our programs. To use these functions, we must include their function declarations. Math Functions Random Numbers Topics discussed in this section:

2 Computer Science: A Structured Programming Approach Using C2 FIGURE 4-26 Library Functions and the Linker

3 Some functions #include abs() int = abs(int) rand() srand() Others: malloc, qsort, etc. Computer Science: A Structured Programming Approach Using C3

4 Math functions #include trig: cos(), etc. pow(base, exp); log, exp, etc. sqrt() ceil(), floor(), trunc(), round(), etc. Computer Science: A Structured Programming Approach Using C4

5 5 FIGURE 4-27 Ceiling Function

6 Computer Science: A Structured Programming Approach Using C6 FIGURE 4-28 Floor Function

7 Computer Science: A Structured Programming Approach Using C7 FIGURE 4-29 Random Number Generation

8 Computer Science: A Structured Programming Approach Using C8 FIGURE 4-30 Generating a Random Number Series

9 Computer Science: A Structured Programming Approach Using C9 srand must be called only once for each random number series. Note

10 Computer Science: A Structured Programming Approach Using C10 PROGRAM 4-9Creating Temporal Random Numbers

11 Computer Science: A Structured Programming Approach Using C11 PROGRAM 4-9Creating Temporal Random Numbers

12 Computer Science: A Structured Programming Approach Using C12 PROGRAM 4-10Creating Pseudorandom Numbers

13 Computer Science: A Structured Programming Approach Using C13 PROGRAM 4-10Creating Pseudorandom Numbers

14 Computer Science: A Structured Programming Approach Using C14 FIGURE 4-31 Random Number Scaling for 3–7

15 Computer Science: A Structured Programming Approach Using C15 PROGRAM 4-11Generating Random Numbers in the Range 10 to 20

16 Computer Science: A Structured Programming Approach Using C16 PROGRAM 4-11Generating Random Numbers in the Range 10 to 20

17 Computer Science: A Structured Programming Approach Using C17 PROGRAM 4-12Generating Random Real Numbers

18 Computer Science: A Structured Programming Approach Using C18 PROGRAM 4-12Generating Random Real Numbers

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