Question

我是c ++的初学者。我需要编写一个代码，让我在输入的两个数字之间添加和相乘数字。示例：我输入2和4，加法应为9，乘法应为24.这就是我到目前为止所做的。

 // sum and multi.cpp : Defines the entry point for the console application.//

 #include "stdafx.h"
 #include <iostream>
 using namespace std;

int main()
{
   int num1;
   cout << "Enter number: " << endl;
   cin >> num1;

   int sum=0;
   int mul = 0;

   for (int i = 0; i <= num1; i++)
   {
      sum += i;
      while (i <= num1)
      {
         mul *= i;
      }
   }

   cout << "sum is: " << sum << mul << endl;

   return 0;
}

虽然它是加法部分，但它只从0到我输入的数字，它不做乘法部分。需要帮助!!!!

Answer 1

您需要一系列数字，因此输入两个数字

int num1, num2;

cin >> num1 >> num2;

int sum=0;
int mul = 1; // Initialize mul to 1, since anything multiplied by 0, results in 0

for (int i = num1; i <= num2; i++) // Start from num1 and end to num2
{
    sum += i;
    //while (i <= num1)  // Don't need another loop
    //{
        mul *= i;
    //}
}

乘以并在两者之间添加整数

1 个答案: