2024年4月28日发(作者：)

c语言 quant函数

English Answer:

The `quant` function in C is used to convert a double-

precision floating-point number to a __int64 integer. It is

defined in the `` header file. The syntax of the

`quant` function is as follows:

c.

__int64 quant(double x);

The `quant` function takes a single argument, which is

a double-precision floating-point number. It returns the

__int64 integer that is closest to the argument. If the

argument is exactly halfway between two integers, the

function returns the even integer.

The `quant` function can be used to convert floating-

point numbers to integers for a variety of purposes. For

example, it can be used to convert the result of a

calculation to an integer, or to convert the value of a

user input to an integer.

Here is an example of how to use the `quant` function:

c.

#include 。

int main() {。

double x = 3.14;

__int64 y = quant(x);

printf("The __int64 integer closest to %f is %lld.n",

x, y);

return 0;

}。

This program will print the following output:

The __int64 integer closest to 3.140000 is 3.

Chinese Answer:

C语言中的`quant`函数用于将双精度浮点数转换为`__int64`

整数。它在``头文件中定义。`quant`函数的语法如下：

c.

__int64 quant(double x);

`quant`函数接收一个参数，即双精度浮点数。它返回最接近该

参数的`__int64`整数。如果参数恰好在两个整数之间，则该函数返

回偶数整数。

`quant`函数可以用于将浮点数转换为整数，用于各种目的。例

如，它可以用于将计算结果转换为整数，或将用户输入的值转换为

整数。

以下是`quant`函数用法示例：

c.

#include 。

int main() {。

double x = 3.14;

__int64 y = quant(x);

printf("最接近%f的__int64整数是%lld。n", x, y);

return 0;

}。

此程序将打印以下输出：

最接近3.140000的__int64整数是3。