A class with one or more pure virtual functions is an Abstract Class in C++, Objects of abstract class can’t be created Abstract Class is a class which contains atl east one Pure Virtual function in it. Abstract classes are used to provide an Interface for its sub classes. Classes inheriting an Abstract Class must
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What is Image Processing? Image Processing is a technique to enhance raw images received from cameras/sensors placed on satellites, space probes and aircrafts or pictures taken in normal day to day life for various applications. There are two methods available in Image Processing. Analog Image Processing Digital Image Processing Analog Image Processing – Analog Image
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Dynamic memory allocation array in c. memory is allocated at compile time. memory is allocated at run time. Problem with Array Sometimes Amount of data cannot be predicted beforehand Number of data items keeps changing during program execution Example: Search for an element in an array of N elements One solution: find the maximum possible value of N and allocate an array
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C++ Inheritance Example class Rectangle { }; class Area : public Rectangle { }; class Perimeter: public Rectangle { }; class Animal { public: int legs = 4; }; class Dog : public Animal { public: int tail = 1; }; int mainQ { Dog d; cout «”Legs are: “«d.legs«endl; cout« “Tail is: “«d.tail; }
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Program testing and debugging refer to the tasks of detecting and removing errors in a program, so that the program produces the desired results on all occasions. Every programmer should be aware of the fact that rarely does a program run perfectly the first time. No matter how thoroughly the design is carried out, and
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By now you must be aware that C has certain features that are easily amenable to bugs. Added to this, it does not check and report all kinds of run time errors. It is therefore, advisable to keep track of such errors and to see that these known errors are not present in the program.
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We have discussed so far various features of C language and are ready to write and execute programs of modest complexity. However, before attempting to develop complex programs, it is worthwhile to consider some programming techniques that would help design efficient and error free programs. The program development process includes three important stages, namely, program
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Application of linked list concepts are useful to model many different abstract data types such as queues, stacks and trees. If we restrict the process of insertion to one end of the list and deletions to the other end, then we have a model of a queue. That is, we can insert an item at
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It is likely that we discover later, the previously allocated memory is not sufficient and we need additional space for more elements. It is also possible that the memory allocated is much larger than necessary and we want to reduce it. In both the cases, we can change the memory size already allocated with the
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calloc in c is another memory allocation function that is normally used for requesting memory space at run time for storing derived data types such as arrays and structures. While malloc allocates a single block of storage space, calloc in c allocates multiple blocks of storage, each of the same size, and then sets all
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