c語言 函數的參數傳遞示例

C ++ llround()函數 (C++ llround() function)

llround() function is a library function of cmath header, it is used to round the given value and casts to a long long integer, it accepts a number and returns the integer (long long int) value that is nearest to the number (with halfway cases).

llround()函數是cmath標頭的庫函數，用于舍入給定值并將其轉換為長整型整數，它接受一個數字并返回最接近該數字的整數(長整型int)值(帶有中途案例)。

Syntax of llround() function:

llround()函數的語法：

    llround(x);

Parameter(s): x – is the number to round nearest to zero with halfway cases.

參數： x –是中途取整的數字，最接近零。

Return value: long long int – it returns long long int type value that is the rounded value of the number x.

返回值： long long int –返回long long int類型值，該值是數字x的舍入值。

Example:

例：

    Input:
float x = 2.3;    
Function call:
llround(x);    
Output:
2
Input:
float x = 2.8;
Function call:
llround(x);    
Output:
3

C ++代碼演示llround()函數的示例 (C++ code to demonstrate the example of llround() function)

// C++ code to demonstrate the example of 
// llround() function
#include <iostream>
#include <cmath>
using namespace std;
// main() section
int main()
{
float x;
x = 15.3;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;
x = 15.5;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;
x = 15.8;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;
x = -15.3;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;
x = -15.5;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;
x = -15.8;
cout<<"llround("<<x<<"): "<<llround(x)<<endl;    
return 0;
}

Output

輸出量

llround(15.3): 15
llround(15.5): 16
llround(15.8): 16
llround(-15.3): -15
llround(-15.5): -16
llround(-15.8): -16

翻譯自: https://www.includehelp.com/cpp-tutorial/llround-function-with-example.aspx

c語言 函數的參數傳遞示例