funtc5b.dat

这是一个包含多个语言的指令集

atan2

#include <stdio.h>
#include <math.h>
int main(void)
{
    double result;
    double x = 90.0, y = 45.0;
    result = atan2(y, x);
    printf("The arc tangent ratio of %lf is %lf
", (y / x), result);
    return 0;
}