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Page 1349 of 2109
isinf() function in C++
In this article we will be discussing the isinf() function in C++, its syntax, working and what will be its return value.isinf() is an inbuilt function in C++ which comes under header file, the function is used to check whether the variable passed in it is infinity or not, no matter if the number is negative infinity or positive infinity. If the number is infinite the function returns a non-zero value (true) and if it is not then it passes zero (false). Also if the number is NAN then also the function will return 0.Syntaxbool isinf(float n);orbool isinf(double n); orbool ...
Read Moreisunordered() function in C++
In this article we are going to discuss the isunordered() function in C++, its syntax, working and its return values.isunordered() function is an inbuilt function in C++ which is defined in header file. The function checks whether the two floating points number be NAN, if both or either one of them is NAN then it will return 1(true) else will return 0(false).Syntaxbool isunordered(float n1, float n2);orbool isunordered(double n1, double n2); orbool isunordered(long double n1, long double n2);The function accepts two floating point variables to compare and check if either one of these is nan.Return valueThe function return the boolean value ...
Read Moredifftime() function in C++
In this article we are going to discuss the difftime() function in C++, its syntax, working and its return values.difftime() function is an inbuilt function in C++ which is defined in header file. The function accepts two parameters of time_t type, function calculate the difference between the two timesSyntaxdouble difftime(time_t end, time_t beginning);Return valueReturns the difference of the time in seconds, stored as double data type.Example#include #include int main () { time_t now; struct tm newyear; double seconds; time(&now); /* get current time; */ newyear = *localtime(&now); newyear.tm_hour = 0; newyear.tm_min = ...
Read Moreiswpunct() function in C++ STL
In this article we are going to discuss the iswpunct() function in C++, its syntax, working and its return values.iswpunct() function is an inbuilt function in C++ which is defined in header file. The function checks whether the passed wide character is a punctuation character or not. This function is a wide character equivalent of ispunct(), which means it works the same as ispunct() the difference is it supports a wide character. So, the function checks if the argument passed is punctuation character then return any non zero integer value(true), else it will return zero(false)Punctuation characters are as follows! ...
Read Moreiswspace() function in C++ STL
In this article we are going to discuss the iswspace() function in C++, its syntax, working and its return values.iswspace() function is an inbuilt function in C++ which is defined in header file. The function checks whether the passed wide character is a white space character or not.This function is a wide character equivalent of isspace(), which means it works the same as isspace() the difference is it supports a wide character. The function checks the if argument passed is a white space (‘ ‘) then return a non-zero integer value(true), else return zero(false)Syntaxint iswspace(wint_t ch);The function accepts only one ...
Read Moreiswupper() function in C++ STL
In this article we are going to discuss the iswupper() function in C++, its syntax, working and its return values.iswupper() function is an inbuilt function in C++ which is defined in header file. The function checks whether the passed wide character is in upper case(A-Z) or not.This function is a wide character equivalent of isupper(), which means it works the same as isupper() the difference is it supports a wide character. The function checks the if argument passed is upper case(A-Z) then return a non-zero integer value(true), else return zero(false)Syntaxint iswupper(wint_t ch);The function accepts only one parameter, i.e. a wide ...
Read MoreHow to join two Vectors using STL in C++?
In this tutorial, we will be discussing a program to understand how to join two given vectors using STL library in C++.To join two given vectors we would be using the set_union() method from the STL library.Example#include using namespace std; int main(){ //collecting the vectors vector vector1 = { 1, 45, 54, 71, 76, 12 }; vector vector2 = { 1, 7, 5, 4, 6, 12 }; sort(vector1.begin(), vector1.end()); sort(vector2.begin(), vector2.end()); cout
Read MoreHow to quickly swap two arrays of the same size in C++?
In this tutorial, we will be discussing a program to understand how to quickly swap two arrays of same size in C++.For this we will be using a quick method called std::swap() for swapping the elements of the two given arrays.Example#include #include using namespace std; int main (){ int a[] = {1, 2, 3, 4}; int b[] = {5, 6, 7, 8}; int n = sizeof(a)/sizeof(a[0]); swap(a, b); cout
Read MoreHow to store Data Triplet in a Vector in C++?
In this tutorial, we will be discussing a program to understand how to store a Data triplet in a vector in C++.To store three elements in a single cell of a vector we will creating a user defined structure and then make a vector from that user defined structure.Example#include using namespace std; struct Test{ int x, y, z; }; int main(){ //creating a vector of user defined structure vector myvec; //inserting values myvec.push_back({2, 31, 102}); myvec.push_back({5, 23, 114}); myvec.push_back({9, 10, 158}); int s = myvec.size(); for (int i=0;i
Read MoreSwapping of subranges from different containers in C++
In this tutorial, we will be discussing a program to understand swapping of subranges of different containers in C++.For this we will be provided with vectors and lists, and we need to swap some of their elements.Example#include #include #include #include using namespace std; int main(){ vector v = { -10, -15, -30, 20, 500 }; list lt = { 10, 50, 30, 100, 50 }; swap_ranges(v.begin(), v.begin() + 3, lt.begin()); for (int n : v) cout
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