C++11 introduces the new header system_error for low level errors. It is possible to write your own error categories. This might be good starting point for writing your own error handling in modern C++. 7 solved c++ std::exception … may I have more please? [closed]
This statement uses a lambda expression. auto updateSlack = [&](const char slack_type, const double s) { if (slack_type == ‘e’) { wns.early_slack = min(s, wns.early_slack); tns.early_slack += s; } else if (slack_type == ‘l’) { wns.late_slack = min(s, wns.late_slack); tns.late_slack += s; } }; The compiler does two things. The first one is that the … Read more
Show some research effort when you post a question here. #include <iostream> #include <unordered_set> #include <fstream> int main() { std::unordered_set<std::string> mySet; std::string word; std::ifstream file1(“myFile1.txt”); if(file1.is_open()) { while(file1 >> word) mySet.emplace(word); file1.close(); } std::ifstream file2(“myFile2.txt”); if(file2.is_open()) { while(file2 >> word) { auto look = mySet.find(word); if(look != mySet.cend()) mySet.erase(look); } file2.close(); } std::ofstream outputFile(“Out.txt”); if(outputFile.is_open()) … Read more
Unhandled exception at in ConsoleApplication1.exe: Microsoft C++ exception: std::invalid_argument at memory location solved Unhandled exception at in ConsoleApplication1.exe: Microsoft C++ exception: std::invalid_argument at memory location
You need to convert your std::string to a std::uint16_t. I’d recommend a stringstream std::istringstream ss(string); // maybe pick a different name std::uint16_t port{}; ss >> port; address.sin_port = htons(port); Be sure to #include <sstream> 2 solved Passing std::string as parameter gives error – htons function
You are most likely running into the NL/CR issue. Instead of if (a[i]==””) Use something like: if (isEmptyLine(a[i])) where bool isEmptyLine(std::string const& s) { for ( auto c : s ) { if ( !std::isspace(c) ) return false; } return true; } You can also convert the file into a file with UNIX style line … Read more
Your implementation is all wrong. For one thing, you are new‘ing temporary Node objects that you shouldn’t be allocating at all, and you are leaking them. And, you are not actually outputting the value of the Node that you delete. And, your whole function can be made much simpler, as you don’t need to enumerate … Read more
Because in your conditions, you check if(hoursWorked[i] < 40) and if(hoursWorked[i] > 40), but there is no condition for if(hoursWorked[i] == 40). You probably wanted to use -or-equal operator on one of these conditions (>= or <=). solved Array not displaying proper output
To test if two consecutive numbers are equal, you dont need 100 elements, you need 2: int points[2], counter = 1; // Read in first point: cin >> points[0]; // Read until we meet our condition: do { // Read a point into the next part of the array. cin >> points[counter]; // toggle counter … Read more
If K>max(R,G,B) then the problem has no solution. So let’s assume K <= max(R,G,B). If you don’t have any control over which ball gets extracted, you’ll need at most (i.e. this is a lower bound) min(R, (K-1))+min(G, (K-1))+min(B, (K-1))+1 extractions for obvious reasons: extract K-1 red balls (or all red balls if R<K), then extract … Read more
The problem wasn’t the c++ code itself, but the framework it used, in this case ROOT. If you define a pointer in a ROOT class, you have to tell the program what to do with that pointer in the case of the class being written to file. Even though the class might never be written … Read more
Not the most elegant solution but this should work #include <iostream> #include <vector> #include <string> #include <sstream> using namespace std; vector<string> split(string str, char delimiter) { vector<string> internal; stringstream ss(str); string tok; while(getline(ss, tok, delimiter)) { internal.push_back(tok); } return internal; } int main(int argc, char **argv) { string str = “My name is bob.I am … Read more
string space = ” “; int locate = -1; for (int j = 0; j < dictionarySize; j++) { if (space == d_newDictionaryArray[j]) { locate=j; break; } } //to locate where the element with space is stored if(locate!=-1) for (int i = locate; i < dictionarySize-1; i++) { d_newDictionaryArray[i] = d_newDictionaryArray[i+1]; } //to shift all … Read more
//… generate(apple,i); //… you have to specify the arguments in the signature of your function ‘generate’ like: void generate( string apple, int it ) { And the error: size_t i; //… for(i=0; i <= pear.length(); i++) { //logic here?! } you add an element to a string using: string.push_back( ‘a’ ); solved C++ Error: ‘no … Read more
You have not written a copy constructor or a copy assignment operator. The Rule of 3 tells us that anytime a destructor has been written, the copy assignment operator and copy constructor should be as well. You haven’t written either so let’s look at what happens: l3 = l1 in this line the implicitly defined … Read more