fast io

ByAnurag batra October 2, 2022September 6, 2022

#include 
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    return 0;
}

Here is what the above code is Doing:
1. It is including the header file bits/stdc++.h. This header file includes all the header files that are required for C++.
2. It is using namespace std. This means that all the names defined in the standard C++ library will be accessible without the std:: prefix.
3. It is defining the main function.
4. It is using the ios_base::sync_with_stdio(false) function. This function makes the execution faster by synchronizing the C and C++ standard streams.
5. It is using the cin.tie(NULL) function. This function flushes the output every time it is used.
6. It is returning 0 from the main function.

CPP Examples

break input stream into words

ByAnurag batra September 14, 2022September 6, 2022

int countWords(string str) { stringstream s(str); string word; int count = 0; while (s >> word) count++; return count; } Here is what the above code is Doing: 1. We create a stringstream object and pass the string to it. 2. We create a string variable word to store each word. 3. We initialize count…

CPP Examples

curl upload folder and subfolders

ByAnurag batra October 10, 2022September 6, 2022

find mydir -type f -exec curl -u xxx:psw –ftp-create-dirs -T {} ftp://192.168.1.158/public/demon_test/{} \; Here is what the above code is Doing: 1. find mydir -type f: find all files in mydir 2. -exec: execute the following command for each file found 3. curl -u xxx:psw –ftp-create-dirs -T {} ftp://192.168.1.158/public/demon_test/{}: a. -u xxx:psw: login with username…

CPP Examples

for loop in cpp

ByAnurag batra October 18, 2022September 6, 2022

for (int i = 0; i < 10; i++){ //Do something as long as i is less than 10, //In that case it will loop 10 times //use break; to restart the loop whenever you want to cancel the loops. cout

CPP Examples

class cpp

ByAnurag batra October 2, 2022September 6, 2022

class Exemple { private: /* data */ public: Exemple(); //Constructor ~Exemple(); //Destructor }; Here is what the above code is Doing: 1. The class is called Exemple. 2. The class has a private data member. 3. The class has a public constructor and destructor. The constructor and destructor are special functions that are called when…

CPP Examples

youtube to facebook link converter

ByAnurag batra September 15, 2022September 6, 2022

// Best website for youtube to facebook link converter https://www.youtubetofb.com/ https://yt2fb.in/ https://fblinker.com/ https://youtubetofb.me/ Here is what the above code is Doing: 1. We are using the requests library to make a GET request to the url. 2. We are then using the BeautifulSoup library to parse the HTML that we got back from the GET…

libevent parse multipart formdata site:stackoverflow.com

CPP Examples

libevent parse multipart formdata site:stackoverflow.com

ByAnurag batra September 14, 2022September 6, 2022

void upload_cb(struct evhttp_request *req, void *arg){ struct bufferevent *bev = evhttp_connection_get_bufferevent(req->evcon); if (bev) //Prio is initialized with 10 states in main bufferevent_priority_set(bev, 9); // set to low priority struct evbuffer* post_buffer = evhttp_request_get_input_buffer(req); size_t body_size = evbuffer_get_length(post_buffer); // a multipart parser takes care of writing the // post_buffer content to a file // this takes…

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