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Found 7346 Articles for C++
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This is a C++ program to implement Bit Array. A Bit Array is an array data structures that compactly stores data. It is basically used to implement a simple data structure.AlgorithmFunctions and pseudocodes:Begin Function getBit(int val, int pos) singleBit->b = 0 if(pos == 0) singleBit->b = val & 1 else singleBit->b = ( val & (1 > pos return singleBit Function setBit(BitArr *bt, B *bit, int pos) bt->bVal[pos] = bit return bt Function getVal(BitArr *bArray) initialize val = ... Read More
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In this C++ program we implement Graph Structured Stack.AlgorithmBegin Function graphStructuredStack(int **adjMat, int s, int bNode): Take an array adjMat, source s and bottom node bNode initialize stackFound = false for sVertex = 1 to noOfNodes for dVertex = 1 to noOfNodes this->adjMat[sVertex][dVertex] = adjMat[sVertex][dVertex] Done Done Push source into mystack. while (!mystack.empty()) element = mystack.top() Initialize destination, d=1 while (d adjMat[element][d] == 1) Push destination into mystack ... Read More
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A directed acyclic graph (DAG) is a graph that is directed and without cycles connecting the other edges. The edges of this graph go one way. This is a C++ program to check whether the graph is DAG.AlgorithmBegin Function checkDAG(int n): intialize count = 0 intialize size = n - 1 for i = 0 to n-1 if (count == size) return 1 done if (arr[i].ptr == NULL) increment count for j = 0 to n-1 ... Read More
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The line graph of an undirected graph G is another graph L(G) that represents the adjacencies between edges of G. In this program, we Perform Edge Coloring to the Line Graph of an Input Graph.AlgorithmBegin Take the input of the number of vertices ‘n’ and number of edges ‘e’. Take the input of ‘n’ vertex pairs for the ‘e’ edges in the graph in ed[][]. Function GenLineGraph(): Construct a line graph in LineEd[][]. To construct line graph, for each edge in the given graph, connect it to its adjacent edge ... Read More
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A bipartite graph is a graph in which if the graph coloring is possible using two colors i.e.; vertices in a set are colored with the same color. In this program we take a bipartite graph as input and outputs colors of each vertex after coloring the vertices.AlgorithmBegin BFS algorithm is used to traverse all the vertices. Take a vertex and colour it yellow. Colour all its neighbour vertices as blue. Colour the next level vertices as yellow and so, until all vertices are coloured. End.Example Code#include using ... Read More
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There is a big distinction between the suffix and prefix versions of ++.In the prefix version (i.e., ++i), the value of i is incremented, and the value of the expression is the new value of i. So basically it first increments then assigns a value to the expression.In the postfix version (i.e., i++), the value of i is incremented, but the value of the expression is the original value of i. So basically it first assigns a value to expression and then increments the variable.Let's look at some code to get a better understanding.Example Code#include using namespace std; int main() ... Read More
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Data hiding is one of the important features of Object Oriented Programming which allows preventing the functions of a program to access directly the internal representation of a class type. The access restriction to the class members is specified by the labeled access modifiers: public, private, and protected sections within the class body.The default access for members and classes is private.Example Codeclass Base { public: // public members go here protected: // protected members go here private: ... Read More
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Basically struct is used to define a structure. But when we want to use it we have to use the struct keyword in C. If we use the typedef keyword, then a new name, we can use the struct by that name, without writing the struct keyword.In C++, there is no difference between 'struct' and 'typedef struct' because, in C++, all struct/union/enum/class declarations act like they are implicitly typedef'ed, as long as the name is not hidden by another declaration with the same name.Though there is one subtle difference that typedefs cannot be forward declared. So for the typedef option, ... Read More
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static_cast − This is used for the normal/ordinary type conversion. This is also the cast responsible for implicit type coersion and can also be called explicitly. You should use it in cases like converting float to int, char to int, etc.dynamic_cast − This cast is used for handling polymorphism. You only need to use it when you're casting to a derived class. This is exclusively to be used in inheritance when you cast from base class to derived class.Regular Cast − This is the most powerful cast available in C++ as it combines const_cast, static_cast and reinterpret_cast. but it's also ... Read More
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The argc stands for argument count and argv stands for argument values. These are variables passed to main function when it starts executing. When we run a program we can give arguments to that program like:$ ./a.out helloHere hello is an argument to the executable. This can be accessed in your program.Example Code#include using namespace std; int main(int argc, char** argv) { cout