输出绝对值

凯旋的青春 LV 7 @ 2023-6-12 20:56:52

#include <iostream>
#include <stdio.h>
#include <iomanip>
#include <math.h>
using namespace std;
const int N = 1e6 + 10;
const int INF = 0x3f3f3f3f;
int main()
{
	float a , b;
	cin >> a;
	b = fabs(a);
	cout << fixed << setprecision(2) << b;
	return 0;
}

0
linsirui LV 10 @ 2024-2-2 19:15:55

#include <bits/stdc++.h> using namespace std; int main() { double n; cin >> n; cout <<fixed << setprecision(2)<< abs(n); return 0; }

刘臻昊 LV 6 @ 2022-10-30 12:08:27

#include <bits/stdc++.h>

using namespace std;

int main(void)
{
    double a;

    cin >> a;

    if (a >= 0)
    {
        cout << fixed << setprecision(2) << a;
    }
    else if (a < 0)
    {
        cout << fixed << setprecision(2) << -a;
    }

    return 0;
}

-1
sng2025102 LV 5 @ 2025-7-8 11:26:25
#include

#include

#include

using namespace std;

int main()

{
```
double a;
cin >> a;
cout << fixed << setprecision(2) << fabs(a);
return 0;
```
}

-1

ts2024stu008 LV 9 @ 2024-11-23 18:36:44

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
int main()
{
double a;
cin >> a;
cout << fixed << setprecision(2) << fabs(a);
return 0;
}

有标志认证，属三无产品，请各位放心食用

-4

limingjie LV 7 @ 2022-8-2 12:06:50

#include<bits/stdc++.h>
using namespace std;
double x; 
int main()
{
    cin >> x;
    x = abs(x)/*求绝对值的函数*/; 
    printf("%.2lf\n", x);
}

-4
chenyanye LV 6 @ 2022-2-8 19:15:29

#include <stdio.h> #include #include <math.h> using namespace std; int main() { double a ,b ; cin >> a; b = fabs (a); printf("%.2lf",b);

}
-7
FSC711300 LV 8 @ 2021-12-9 22:43:34
abs函数：求绝对值
用法：
```
abs(double x);
```
返回x的绝对值。例子：
```
abs(19.5)
```
返回值: 19.5
```
abs(-123.4)
```
返回值： 123.4 注意：需要包括库：
```
#include <math.h>
```