我正在尝试用 C++ 制作一个小型计算器但它只计算科学计数法

发布于 2025-01-10 01:09:19 字数 466 浏览 2 评论 0原文

我是 C++ 新手，首先我正在制作一个乘法计算器。问题是每当我计算超过 1000 的数字时，它只会计算科学计数法。代码如下，有人可以帮忙吗？

 #include <iostream>
using namespace std;
int main()
{
    float value;
    cout << "Please enter value ";
    cin >> value;
    float multBy;
    cout << "\nWhat would you like to multiply by? ";
    cin >> multBy;
    float answer = value * multBy;
    cout << "\nYour answer is " << answer;
    system("pause>0");
}

原文

I'm new to C++ and to start off I'm making a multiplication calculator. The problem is whenever I do numbers over ~1000 it just calculates scientific notations. The code is below, can anyone help?

 #include <iostream>
using namespace std;
int main()
{
    float value;
    cout << "Please enter value ";
    cin >> value;
    float multBy;
    cout << "\nWhat would you like to multiply by? ";
    cin >> multBy;
    float answer = value * multBy;
    cout << "\nYour answer is " << answer;
    system("pause>0");
}

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雅心素梦 2025-01-17 01:09:19

以下是您修改后的代码。通过使用showpoint和fixed，结果以定点表示法显示，通过使用“set precision”我们可以调整结果中小数点后的数字。

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{   float value;
    cout << "Please enter value ";
    cin >> value;
    float multBy;
    cout << "\nWhat would you like to multiply by? ";
    cin >> multBy;
    float answer = value * multBy;
    cout << "\nYour answer is " <<showpoint<<fixed<<setprecision(2)<<answer;
    system("pause>0");
}

The following is modified code of yours. By the use of showpoint and fixed , the results are displayed in fixed point notation and by the use of "setprecision" we can adjust the numbers after decimal in result.

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{   float value;
    cout << "Please enter value ";
    cin >> value;
    float multBy;
    cout << "\nWhat would you like to multiply by? ";
    cin >> multBy;
    float answer = value * multBy;
    cout << "\nYour answer is " <<showpoint<<fixed<<setprecision(2)<<answer;
    system("pause>0");
}

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