while-loop

问题 I would like to know if it's possible to have multiple while (cin>>(variable)) as in the following code: #include <iostream> #include <vector> using namespace std; int main() { vector<int> v1, v2; int input; while (cin>>input) v1.push_back(input); while (cin>>input) v2.push_back(input); return 0; } The logic of my program is to let user define the number of elements and value of each element in two sets of int vectors. However, I realized that after entering the first set of numbers for the

问题 I would like to know if it's possible to have multiple while (cin>>(variable)) as in the following code: #include <iostream> #include <vector> using namespace std; int main() { vector<int> v1, v2; int input; while (cin>>input) v1.push_back(input); while (cin>>input) v2.push_back(input); return 0; } The logic of my program is to let user define the number of elements and value of each element in two sets of int vectors. However, I realized that after entering the first set of numbers for the

问题 I am trying to achieve the following: User 1: - Alert 1 Email - Alert 2 Email User 2: - Alert 1 Email - Alert 2 Email I'm trying to accomplish this with a while loop inside another while loop that is running a mysqli prepared statement, but I cannot get it to work. Code: $stmtAdd = $conn->prepare("INSERT INTO Data (row1, row2, row3, row4) VALUES ('".$row1."', '".$row2."', '".$row3."', '".$row4."')"); $stmtAdd->execute(); $stmtAdd->close(); $stmtUsers = $conn->prepare("SELECT username,

问题 I am trying to achieve the following: User 1: - Alert 1 Email - Alert 2 Email User 2: - Alert 1 Email - Alert 2 Email I'm trying to accomplish this with a while loop inside another while loop that is running a mysqli prepared statement, but I cannot get it to work. Code: $stmtAdd = $conn->prepare("INSERT INTO Data (row1, row2, row3, row4) VALUES ('".$row1."', '".$row2."', '".$row3."', '".$row4."')"); $stmtAdd->execute(); $stmtAdd->close(); $stmtUsers = $conn->prepare("SELECT username,

问题 My objective: write an application that uses while loop to get 20 inputs from a user and displays the sum of all those numbers. I get how to do the while loop but I don't know how to get the sum of all those numbers (because the variable will be the same). Here is what I have so far: Scanner Numb = new Scanner (System.in); int count = 0; while (count<20) { System.out.println("Enter number: "); int numb = Numb.nextInt(); count++; 回答1: use a common variable to store sum int sum = 0; int count =

问题 This question already has answers here : fgets doesn't work after scanf [duplicate] (9 answers) Closed 11 months ago . #define len 100 char sourceString[len]; char command; int main(void) { while (1) { printf("\nEnter source: "); fgets(sourceString, len, stdin); // this gets skipped on second loop. printf("\nEnter command: "); scanf(" %c", command) switch (command) { case 'A': printf("%s", sourceString); break; case 'B': printf("filler"); break; default: break; } } return 0; } Whether im

问题 I'm trying to loop a list and that list have 4 arrays inside and each array have 7 values I am looping the list and then when I get an array from the list, since I know how many values have the array I assign each array index like this: personObject.setName(String.valueOf(myArray[0]) and then at the end of the while loop I add to a list of Persons the personObject like this: listOfPersons.add(personObject). My problem is that my list only gets populate with the same object and I know that the

问题 Apologies if a version of this question has been asked before. I looked through but couldn't find something that really addressed my problem. I started learning python today and have tried to build a simple Rock, Paper, Scissors game. I have the following code and it works pretty well: import random choices = ["rock", "paper", "scissors"] player_move = input("Enter your move... ").lower() cpu_move = random.choice(choices) play = True result_1 = ("Computer: " + cpu_move) result_2 = ("You :" +

问题 Apologies if a version of this question has been asked before. I looked through but couldn't find something that really addressed my problem. I started learning python today and have tried to build a simple Rock, Paper, Scissors game. I have the following code and it works pretty well: import random choices = ["rock", "paper", "scissors"] player_move = input("Enter your move... ").lower() cpu_move = random.choice(choices) play = True result_1 = ("Computer: " + cpu_move) result_2 = ("You :" +

问题 I am writing a python program that sends packets for a specified amount of time. The sending script: import socket import time import networkparam import ray ray.init() transformer_sending_time = 0 final_message_sent = False @ray.remote def send_message(): """ Sends an abnormal measurement to the specified ip address or port number given by the networkparam module Parameters ---------- None, however we can consider the definitions in networkparam as the function args Returns ---------- None "