浮点数转换为整数四舍五入

Given a float value and we have to round the value to the nearest integer with the help of Macro in C language.

给定一个浮点值，我们必须借助C语言中的Macro将其舍入到最接近的整数。

Macro Definition:

宏定义：

#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))

Example:

例：

Input:    float val1=10.00f;    float val2=10.23f;    float val3=10.50f;    float val4=10.65f;    Output:    After round val1=10    After round val2=10    After round val3=11    After round val4=11

Program:

程序：

#include 
    
     //Macro#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))//Main code int main(void){
   	float val1=10.00f;	float val2=10.23f;	float val3=10.50f;	float val4=10.65f;	printf("After round val1=%d\n",round(val1));	printf("After round val2=%d\n",round(val2));	printf("After round val3=%d\n",round(val3));	printf("After round val4=%d\n",round(val4));	return 0;}
    

Output

输出量

After round val1=10After round val2=10After round val3=11After round val4=11

翻译自:

浮点数转换为整数四舍五入