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The function frexp() is used to break the floating point number into its binary significand and integral exponent for 2. It returns the binary significand and its range is (0.5, 1). If we pass value zero, its significand and exponent value will be zero.Here is the mathematical expression of frexp(), x = significand * (2^exponent)Here is the syntax of frexp() in C++ language, float frexp(float variable_name, int* exponent);Here, variable_name − Any name of variable which has floating number to be decomposed into binary significant.exponent − It is a pointer to int where value of exponent is stored.Here is an example ... Read More
The function log1p() is used to calculate the natural logarithm (base e logarithm) of (a+1) where a is any number. It returns the value of natural logarithm of (a+1). It returns Not a number(Nan) when we pass a value which is less than -1.Here is the mathematical expression of log1p(), log1p(a) = base-e log(a+1)Here is the syntax of log1p() in C++ language, float log1p(float variable_name);Here, variable_name − Any name given to the variable whose logarithmic value is calculated.Here is an example of log1p() in C++ language, Example Live Demo#include #include using namespace std; int main() { int ... Read More
The function expm1() is used to calculate the exponential raised to the power of any number minus one. It returns the value of (exponential raised to the power of a) - 1.Here is the mathematical expression of expm1(),expm1(a) = (e^a) - 1Here is the syntax of expm1() in C++ language,float expm1(variable_name);Here,variable_name − Any name given to the variable whose value is calculated.Here is an example of expm1() in C++ language,Example Live Demo#include #include using namespace std; int main() { int x = 10; float y = 8.28; cout
The function ldexp() is used to calculate the multiplication of a floating point value ‘a’ by the number 2 raised to the exponent power. It takes two arguments, first is a floating point number and second is an integer value.Here is the mathematical expression of ldexp(), ldexp() = a * 2^bHere is the syntax of ldexp() in C++ language, float ldexp(float variable1 , int variable2)Here, variable1 − Any name given to the variable which is representing the significand.variable2 − Any name given to the variable which is representing the exponent.Here is an example of ldexp() in C++ language, Example Live Demo#include ... Read More
The function remquo() is used to calculate the floating point remainder of numerator or denominator and stores the quotient to the passed pointer. It returns Nan(Not a number) when denominator is zero.Here is the syntax of remquo() in C++ language, float remquo(float var1, float var2, int* var3);Here, var1 − The variable which stores the value of numerator.var2 − The variable which stores the value of denominator.var3 − The pointer variable which stores the quotient.Here is an example of remquo() in C++ language, Example Live Demo#include #include using namespace std; int main() { float x = 28.8; ... Read More
The string literals are the set of characters which is enclosed in double quotes(“ “). Wide-string literals are prefixed with L always.Types of string literals −Sr.No.String Literals & Description1“ “Unprefixed string literal2L” “Wide-string literal3u8” “UTF-8 encoded string literal4u” “UTF-16 encoded string literal5U” “UTF-32 encoded string literal6R” “Raw string literalHere is an example of string literal in C++ language,Example Live Demo#include #include #include using namespace std; int main() { wchar_t s[] = L"hello world!"; wcout
new/ deleteThe new operator requests for the memory allocation in heap. If the sufficient memory is available, it initializes the memory to the pointer variable and returns its address.The delete operator is used to deallocate the memory. User has the privilege to deallocate the created pointer variable by this delete operator.Here is an example of new/delete operator in C++ language,Example Live Demo#include using namespace std; int main () { int *ptr1 = NULL; ptr1 = new int; float *ptr2 = new float(299.121); int *ptr3 = new int[28]; *ptr1 = 28; cout
Extraction of k bits from the given position in a number involves converting the number into its binary representation. An example of this is given as follows −Number = 20 Binary representation = 10100 k = 3 Position = 2 The bits extracted are 010 which represent 2.A program that demonstrates this is given as follows.Example Live Demopublic class Example { public static void main (String[] args) { int number = 20, k = 3, pos = 2; int exNum = ((1 > (pos - 1)); System.out.println("Extract " + k + ... Read More
Union is a user-defined datatype. All the members of union share same memory location. Size of union is decided by the size of largest member of union. If you want to use same memory location for two or more members, union is the best for that.Unions are similar to structures. Union variables are created in same manner as structure variables. The keyword “union” is used to define unions in C language.Here is the syntax of unions in C language, union union_name { member definition; } union_variables;Here, union_name − Any name given to the union.member definition − Set of member ... Read More
The operator ‘?’ is known as ternary operator as it requires three operands to act upon. It can be represented by “ ? : ”. It is also known as conditional operator. The operator improves the performance and reduces the lines of code.Here is the syntax of ternary operator in C language, Expression1 ? Expression2 : Expression3Here is an example of Ternary Operator in C language, Example Live Demo#include int main() { int a = -1; double b = 26.4231; int c = a? printf("True value : %lf", b):printf("False value : 0"); return 0; }OutputHere ... Read More