c语言 函数的参数传递示例

C ++ llround()函数 (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()函数是cmath标头的库函数，用于舍入给定值并将其转换为长整型整数，它接受一个数字并返回最接近该数字的整数(长整型int)值(带有中途案例)。

Syntax of llround() function:

llround()函数的语法：

llround(x);

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

参数： x –是中途取整的数字，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类型值，该值是数字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 ++代码演示llround()函数的示例 (C++ code to demonstrate the example of llround() function)

// C++ code to demonstrate the example of // llround() function#include 
    
     #include 
     
      using namespace std;// main() sectionint main(){
       float x;        x = 15.3;    cout<<"llround("<
      
       <<"): "<
       
        <
       
      
     
    

Output

输出量

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

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c语言 函数的参数传递示例