c - 如何截断小数点后的值

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用户输入这样的双精度值：2423242.6789。仅扫描2423242我该​​怎么办？

最佳答案

假设为正数，请使用floor()

#include <math.h>

double x;
scanf("%lf", &x);
x = floor(x);
// or
x = x < 0.0 ? ceil(x) : floor(x); // to cope with + and - doubles

关于c - 如何截断小数点后的值，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/26091191/