C++ Primer 习题1.10

/*习题1.10之for*/
#include <iostream>
int main()
{
    int sum = 0;
    for (int i = 50; i <= 100; ++i)
        sum += i;
    std::cout << "sum的值是: " << sum << std::endl;
    return 0;
}

/*输出结果为3825*/

/*习题1.10之while*/
#include <iostream>
int main()
{
    int sum = 0, i = 50;
    while (i <= 100) {
        sum += i;
        ++i;
    }
    std::cout << "sum的值是: " << sum << std::endl;
    return 0;
}

/*输出结果为3825*/