QString str1 = "1234.56"; double val = str1.toFloat(); // val == 1234.56
Here is what the above code is Doing:
1. The first line creates a QString object called str1 and initializes it with the string “1234.56”.
2. The second line converts the string to a double and stores the result in the variable val.
3. The third line prints the value of val to the console.
string s; int len=0,i=1; cin>>s; int n=s.size(); vector LPS(n); LPS[0]=0; while(i
//———————————- // CREDIT: gregpaton08 on stack overflow // https://stackoverflow.com/questions/478898/how-do-i-execute-a-command-and-get-the-output-of-the-command-within-c-using-po //———————————- #include #include #include #include #include #include std::string exec(const char* cmd) { std::array buffer; std::string result; std::unique_ptr pipe(popen(cmd, “r”), pclose); if (!pipe) { throw std::runtime_error(“popen() failed!”); } while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) { result += buffer.data(); } return result; } Here is what the above…
Retrieves the thread identifier of the calling thread. DWORD GetCurrentThreadId(); Here is what the above code is Doing: 1. We are creating a new thread using the CreateThread() function. 2. The CreateThread() function takes in the following parameters: – A pointer to a SECURITY_ATTRIBUTES structure. – The size of the stack to be allocated for…
// Inserting at start vector_name.insert(vector_name.begin(), element_to_be_inserted); // Inserting after xth element vector_name.insert(vector_name.begin()+(x-1), element_to_be_inserted); // Inserting at last vector_name.push_back(element_to_be_inserted); Here is what the above code is Doing: 1. Inserting at start vector_name.insert(vector_name.begin(), element_to_be_inserted); 2. Inserting after xth element vector_name.insert(vector_name.begin()+(x-1), element_to_be_inserted); 3. Inserting at last vector_name.push_back(element_to_be_inserted);
Printf(“You are my star and I love you so much”); Here is what the above code is Doing: 1. We are creating a variable called “name” and assigning it a value of “Sophia”. 2. We are creating a variable called “age” and assigning it a value of “5”. 3. We are creating a variable called…
if(male==true) return “you are dying” Here is what the above code is Doing: 1. It’s checking if the variable male is equal to true. 2. If it is, it returns the string “you are dying”. 3. If it isn’t, it returns the string “you are not dying”.