Question

#include <iostream>
#include <math.h>
using namespace std;
int main()
{   
    int last;

do{
    system("cls");
    cout<<"                              FIBONACCI                         "<<endl;
    int a,sum;
    cout<<"Enter the number of outputs you want to be displayed : ";
    cin>>a;

    long long unsigned int b= 0, c=1;
    while(a >=0)
    {
            cout<<b<<endl;
            sum+=b;
            b=b+c;
            c=b-c;
            a--;                        
    }
    cout<<"total = "<<sum<<endl;
    cin>>last;
}
while(last==0);

system("pause");
return 0;   
}

每当我想通过给出0作为最后一个输入来重复它时，sum的值不会自动重置，并且新的和被添加到前一个并且错误的值显示为总数。

Answer 1

您的变量总和在您访问之前未初始化。

你应该改变

int a,sum;

到

int a;
int sum = 0;

Answer 2

您已声明K1 i a p错误，其类型应与class SomeClass a where someFun :: a -> Maybe Int default someFun :: (Generic a, GSomeClass (Rep a)) => a -> Maybe Int someFun a = gsomeFun (from a)和sum

相同

和c也没有被初始化，但是：你的计算很奇怪

long long unsigned int sum;

所以我建议

sum

Answer 3

#include <iostream>
#include <math.h>
using namespace std;
int main()
{   
    int last;

do{
    system("cls");
    cout<<"FIBONACCI \n\n";      
    int a,sum;
    cout<<"Enter the number of outputs you want to be displayed : ";
    cin>>a;

    long long unsigned int sum=0,b=0,c=1,d=0;
    while(a >=0)
    {
            cout<<b<<endl;
            sum+=b;
            b=d+c;
            c=d;
            d=b;
            a--;                        
    }
    cout<<"total = "<<sum<<endl;
    cin>>last;
}
while(last==0);

system("pause");
return 0;   
}

在计算中进行了更改，并且在do..while循环的求和中将sum初始化为零并且对不良标点符号抱歉

斐波纳契序列和总误差

3 个答案: