利用while循环
#include <iostream>
int main()
{
int sum = 0, val = 50;
while (val <= 100)
{
sum = sum + val;
++val; //++val先加后用
}
std::cout << "sum of 50 to 100 inclusive is " << sum << std::endl;
return 0;
}
下面是for循环
#include <iostream>
int main()
{
int sum = 0, val = 50;
for (; val <= 100; val++) //val++表示先用后加
{
sum = sum + val;
}
std::cout << "sum of 50 to 100 inclusive is " << sum << std::endl;
return 0;
}
