Server Side Programming Articles - Page 1943 of 2646

In this tutorial, we will be discussing a program to convert all substrings of length ‘k’ from base ‘b’ to decimal.For this we will be provided with a string of some certain length. Our task is to take the substrings from the given string of size ‘k’ and get it converted into the decimal numbers from being in base ‘b’.Example Live Demo#include using namespace std; //converting the substrings to decimals int convert_substrings(string str, int k, int b){    for (int i=0; i + k = 0; i--){          sum = sum + ((sub.at(i) - '0') * pow(b, ... Read More

$ operatorOperator is used to define variables in php. For example, message. Such variables can contain any type of value like int, string, etc.$$ operator$$ is a special operator that contains the name of another variable and can be used to access the value of that variable.ExampleFollowing the example, shows the usage of '′vs′$' operators. Live Demo    PHP Example     Outputmessage Welcome to Tutorialspoint

'AND' Logical operator'AND' operator is a logical AND operator but has low precedence to = operator.'&&' Logical operator'&&' is also a logical AND operator but has high precedence to = operator.ExampleFollowing the example, shows the difference of 'AND' vs '&&' operators. Live Demo    PHP Example     Output$result = $x AND $y bool(true) $result = $x && $y bool(false)

'|' Bitwise OR operator'|' operator is a bitwise OR operator and is used to set the bit to 1 if any of the corresponding bit is 1.'||' Logical Or operator'||' is a logical Or operator and works on complete operands as whole.ExampleFollowing example, shows usage of '|' vs '||' operators. Live Demo    PHP Example     Output$x | $y = 3 $x || $y = 1

'!==' comparison operator'!==' operator checks the unequality of two objects with a type check. It does not converts the datatype and makes a typed check.For example 1 !== '1' will results true.'==!' comparison operator'==!' operator is combination of two operators and can be written as == (!operands).ExampleFollowing example, shows usage of '!==' vs '==!' operators. Live Demo    PHP Example     Output$x !== operator $y = bool(true) $x ==! operator $y = bool(true)

As we know that in C/C++ we require float and double data type for the representation of Floating point numbers i.e the numbers which have decimal part with them.Now on the basis of precision provided by both of these data types we can differentiate between both of them.In simple words it could be state that double has 2x more precision as compare than float which means that double data type has double precision than as compare to that of float data type.In terms of number of precision it can be stated as double has 64 bit precision for floating point ... Read More

In C both Structure and Array are used as container for data types i.e in both structure and array we can store data and also can perform different operations over them.On the basis of internal implementation following are some basic differences between both.Sr. No.KeyStructureArray1DefinitionStructure can be defined as a data structure used as container which can hold variables of different types.On other hand Array is a type of data structure used as container which can hold variables of same type and do not support multiple data type variables.2Memory AllocationMemory allocation for input data in structure does not necessary to be ... Read More

As we know that in programming string can be defined as the collection of characters. Now for the requirement of finding how many characters are being used to create a string, C provides two approaches which are strlen() and sizeof().As mentioned in above point both of these methods are used to find out the length of target operand but on the basis of their internal implementation following are some basic differences between both.Sr. No.Keystrlen()sizeof()1Definitionstrlen() is a predefined function defined in a Header file named string.h in C.On other hand sizeof() is a Unary operator and not a predefined function.2Implementationstrlen is ... Read More

In this problem, we are given numbers in the form of an inverted triangle. Our task is to create a program that will find the maximum path sum in an inverted triangle.Inverted triangle form of number is an arrangement when the first row contains n elements, second n-1, and so on.Here, we have to find the maximum sum that can 3 be obtained by adding one element from each row.Let’s take an example to understand the problem −Input  −5 1 9  3 6   2Output − 17Explanation − Here, I have found the path from the last row to the ... Read More

In this problem, we are given numbers that are in the form of a triangle. Our task is to create a program that will find the maximum path sum in a triangle.The elements are arranged starting from the 1st row with 1 one element and then next rows with an increasing number of elements till there are elements in the nth row.So, the program will find the path that will provide the maximum sum of elements in the triangle. So, we have to find the path that will provide the maximum sum.Let’s take an example to understand the problem −Input ... Read More