atan2 example in C

Header file:

    math.h

Synopsis:

     double atan2(double y, double x);

Description:

     Returns principal value of the arc tangent of y/x.

atan2 function in C example

  #include<stdio.h>
  #include<math.h>
  int main() {
        /*
         * radian to degree conversion
         * degree = radian * 180 / PI;
         */
        double deg, x , y;
        printf("Enter your input for x & y:");
        scanf("%lf%lf", &x, &y);
        deg = atan2(y, x) * (180 / 3.14);
        printf("Degree: %lf\n", deg);
        return 0;
  }

  Output:

  jp@jp-VirtualBox:~/cpgms/math$ gcc atan2.c -lm
  jp@jp-VirtualBox:~/cpgms/math$ ./a.out
  Enter your input for x & y:1 1
  Degree: 45.022825