浮點數轉換為整數四舍五入

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

給定一個浮點值，我們必須借助C語言中的Macro將其舍入到最接近的整數。

Macro Definition:

宏定義：

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

Program:

程序：

#include <stdio.h>//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

輸出量

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

翻譯自: https://www.includehelp.com/c-programs/define-a-macro-to-round-a-float-value-to-nearest-integer-in-c.aspx

浮點數轉換為整數四舍五入

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