Question

编写一个控制台程序,计算从1 ~ 10的偶数的和。要求采用while循环

Answer 1

#include "pch.h"
#include <iostream>

int main()
{
int n = 1, sum = 0;
while (n <= 10)
{
if (n % 2 == 0)
{
sum += n;
}
n++;
}
std::cout << sum << std::endl;
}

Answer 2

#include <stdio.h>

int main() {
int i = 1;
int result = 0;
while (i < 10) {
if (i % 2 == 0) {
result += i;
}
i++;
}
printf("%d\n", result);
}