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Showing posts from February, 2022

String Class in C++

February 25, 2022

//Use of String class in CPP #include<iostream> #include<string> using namespace std; int main() { string str1="compuhelp";//using = operator cout<<endl<<"String is "<<str1; cout<<endl<<"size of string is "<<str1.size(); cout<<endl<<"Element access "<<str1[0];//displays first char cout<<endl<<"Element at "<<str1.at(1);//displays second char cout<<endl<<endl<<"Display String character by character"<<endl; for(int i=0;i<str1.size();i++) cout<<str1[i]<<" "; cout<<endl<<"second method to display string char by char"<<endl; for(int i=0;i<str1.length();i++) cout<<str1.at(i)<<" "; cout<<endl<<"use of substr function of string "; cout<<endl<<str1.substr(4);//di...

Vector class in C++ (Part of STL)

February 25, 2022

//Use of vector template in cpp #include<iostream> #include<vector> using namespace std; int main() { vector<int> v; cout<<v.size();//will display size of vector v.push_back(10);//to add value to vector v.push_back(20); cout<<v.size();//will display size after adding values cout<<endl<<"values of vector"<<endl; cout<<v[0];//to display first value cout<<v[1]; cout<<endl<<"values of vector through iterator"; vector<int>::iterator it = v.begin(); while( it != v.end()) { cout <<endl<<"value of it = " << *it; it++; }//end of while v.push_back(30); v.push_back(40); cout<<endl<<"now the size of vector is "<<v.size(); ...

JavaScript Timer Example

February 05, 2022

<!DOCTYPE html > <html lang = "en" > <head> <meta charset = "UTF-8" > <meta http-equiv = "X-UA-Compatible" content = "IE=edge" > <meta name = "viewport" content = "width=device-width, initial-scale=1.0" > <title> Use of JavaScript </title> <script> var ctr = 0 ; //initializing ctr var timer1 = null ; function msg ( str1 ) { // alert("hello" + str1); head1 . innerHTML = "Hello " + str1 ; } function increment () { //alert("hello"); ctr = ctr + 1 ; hea...