February 2020
Beginner to intermediate
616 pages
15h 16m
English
Content preview from Practical C Programming
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How to do it...
Follow these steps to create a validation check using assertion. The recipe will not allow the program to run if the value of the number of passengers is zero or negative:
- The user is prompted to enter how many passengers are flying:
printf("How many passengers ? ");scanf("%d",&noOfPassengers);
- An assert instance is defined to ensure that the value of the number of passengers should not be 0 or negative. If the user enters a value of 0 or negative for the number of passengers, an error message will be displayed showing the line number, and the program will abort:
assert(noOfPassengers > 0 && "Number of passengers should be a positive integer");
- If the value for the number of passengers entered is a positive value, the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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