#include <stdio.h>
#include <math.h>

#define PI 3.141593

int main(){
  ///edw mou bgazei to lathos stin agkili/
    int i;
    double rad;
    for(i=0;i<=360;i=i+10)
    {
      rad = 2*PI*i/360;
      printf("%d %f\n",i,sin(rad));
    }
    return 0;
}


kai compile me cc -lm example.c

xreiazete k to -lm