This video provides a description and example of floor(), ceil(), trunc(), and round().
- [Instructor] Let's see some nearest integer functions…in the C standard library.…First we have round, which returns…the closest integer value to the argument.…The trunc function returns the truncated value.…That is, the function returns the integer part…of the argument.…Next we have the ceiling and floor functions.…Ceiling returns the smallest integer value…not less than the argument.…This may be used to calculate the hours…to bill in a parking lot that only charges per hour.…
So if you stayed for 5.2 hours,…you will be billed for six hours anyway.…Finally, the floor function returns the largest integer…value not greater than the argument.…This is what people use to report the age of a person.…For example, if someone is 23.7 years old,…people just say 23.…
Author
Eduardo Corpeño
Released
2/6/2019- Working with header files
- C constants and types
- Unformatted and formatted input/output
- Accessing files with C functions
- Generating random numbers
- Converting strings
- Sorting and searching for data
- Manipulating strings
- Using mathematical functions
Skill Level Intermediate
Duration
Views
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Introduction
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1. The C Standard Library
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Overview of the library1m 51s
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Header files1m 50s
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Constants and types3m 47s
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2. Input and Output Library: stdio.h
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Unformatted I/O2m 34s
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Unformatted I/O example2m 34s
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Formatted I/O2m 51s
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Formatted I/O example5m 10s
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File access1m 55s
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File access example3m 53s
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3. General Purpose: stdlib.h
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Memory allocation1m 32s
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Memory allocation example2m 29s
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Random number generation1m 48s
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String conversion2m 11s
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String conversion example6m 29s
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Sort and search1m 52s
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Sort and search main4m 50s
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Challenge: Let's get random1m 38s
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Solution: Let's get random5m 40s
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4. String Functions: string.h
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String manipulation1m 21s
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String examination1m 43s
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5. Mathematical Functions: math.h
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Mathematical functions2m 50s
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Trigonometric functions1m 42s
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Powers and exponentials1m 9s
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Conclusion
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Next steps1m
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Video: Rounding and truncating