c语言函数的参数传递示例_isgreaterequal（）函数以及C ++中的示例

c语言函数的参数传递示例

C ++ isgreaterequal()函数 (C++ isgreaterequal() function)

isgreaterequal() function is a library function of cmath header, it is used to check whether the given first value is greater than or equal to the second value. It accepts two values (float, double or long double) and returns 1 if the first value is greater than or equal to the second value; 0, otherwise.

isgreaterequal()函数是cmath标头的库函数，用于检查给定的第一个值是否大于或等于第二个值。它接受两个值( float ， double或long double )，如果第一个值大于或等于第二个值，则返回1；否则，返回1。 0，否则。

Syntax of isgreaterequal() function:

isgreaterequal()函数的语法：

In C99, it has been implemented as a macro,

在C99中，它已实现为宏，

    macro isgreaterequal(x, y)

In C++11, it has been implemented as a function,

在C ++ 11中，它已作为函数实现，

    bool isgreaterequal (float x      , float y);
bool isgreaterequal (double x     , double y);
bool isgreaterequal (long double x, long double y);

Parameter(s):

参数：

x, y – represent the two values to be checked whether x is greater than or equal to the y.
x，y –表示两个要检查的值，即x是否大于或等于y 。

Return value:

返回值：

The returns type of this function is bool, it returns 1 if x is greater than or equal to y; 0, otherwise.

该函数的返回类型为bool ，如果x大于或等于y ，则返回1；否则，返回1。 0，否则。

Example:

例：

    Input:
float x = 10.0f;
float y = 5.0f;
Function call:
isgreaterequal(x, y);
Output:
1

C ++代码演示isgreaterequal()函数的示例 (C++ code to demonstrate the example of isgreaterequal() function)

// C++ code to demonstrate the example of
// isgreaterequal() function
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
cout << "isgreaterequal(0.0f, -2.0f)   : " << isgreaterequal(0.0f, -2.0f) << endl;
cout << "isgreaterequal(10.0f, 20.0f)  : " << isgreaterequal(10.0f, 20.0f) << endl;
cout << "isgreaterequal(10.0f, 10.0f)  : " << isgreaterequal(10.0f, 10.0f) << endl;
cout << "isgreaterequal(-10.0f, -20.0f): " << isgreaterequal(-10.0f, -20.0f) << endl;
float x = 10.0f;
float y = 5.0f;
// checking using the condition
if (isgreaterequal(x, y)) {
cout << x << " is greater than or equal to " << y << endl;
}
else {
cout << x << " is not greater than or equal to " << y << endl;
}
x = 10.0f;
y = 10.0f;
if (isgreaterequal(x, y)) {
cout << x << " is greater than or equal to " << y << endl;
}
else {
cout << x << " is not greater than or equal to " << y << endl;
}
return 0;
}

Output

输出量

isgreaterequal(0.0f, -2.0f)   : 1
isgreaterequal(10.0f, 20.0f)  : 0
isgreaterequal(10.0f, 10.0f)  : 1
isgreaterequal(-10.0f, -20.0f): 1
10 is greater than or equal to 5
10 is greater than or equal to 10

Reference: C++ isgreaterequal() function

参考： C ++ isgreaterequal()函数