在Objective-C中将float转换为int [英] Convert float to int in Objective-C

问题描述

如何在四舍五入到下一个整数时将 float 转换为 int?例如，1.00001 会去 2，1.9999 会去 2.

How can I convert a float to int while rounding up to the next integer? For example, 1.00001 would go to 2 and 1.9999 would go to 2.

推荐答案

float myFloat = 3.333

// for nearest integer rounded up (3.333 -> 4):
int result = (int)ceilf(myFloat );

// for nearest integer (3.4999 -> 3, 3.5 -> 4):
int result = (int)roundf(myFloat );

// for nearest integer rounded down (3.999 -> 3):
int result = (int)floor(myFloat);

// For just an integer value (for which you don't care about accuracy) 
int result = (int)myFloat;

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