C语言输入任意一个数求sin的值

运用数学函数math算的sin的值

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<math.h>
#define eps 1e-6
int main()
{
	int n = 1; float x;
	double fz, fm = 1, sinx;
	printf("输入x的值:");
	scanf("%f",&x);
	fz = x; sinx = x;
	do
	{
		n = n + 1;
		fz = -fz * x * x;
		fm = fm * (2 * n - 2) * (2 * n - 1);
		sinx = sinx + fz / fm;
	} while (fabs(fz / fm) > eps);
	printf("sin(%f)=%0.6f\n", x, sinx);
	printf("sin(%f)=%0.6f\n", x, sin(x));
	return 0;
}
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