I was asked to calculate sine using UDF.. using pow is not allowed... i did the following way...

if i dont use the codes in red, it cant calculate if the value of degree is higher... is there any other simpler way to create this function..?Code:#include <stdio.h> #include <conio.h> int fact(int num); float powe(float base, int power); float sine(float x); int main(void) { float xx,x; printf("Enter the angle in degree : "); scanf("%f",&xx); while(xx>=360) xx=xx-360; if (xx>=270) xx=xx-360; if(xx>=180 && xx<270) xx= xx-180; if(xx>90 && xx<180) xx=180-xx; x=3.141592654/180*xx; printf("Sin %d = %.4f",(int)xx,sine(x)); getch(); return 0; } float sine(float x) { int i; float sine=0; for(i=1;i<=10;i++) sine=sine+powe(-1,i+1)*(powe(x,2*i-1)/fact(2*i-1)); return sine; } int fact(int num) { int i,p=1; for (i=1;i<=num;i++) { p=p*i; } return p; } float powe(float base , int power) { int i; float ans=1; for(i=0;i<power;i++) ans=ans*base; return ans; }