Overview of C

Program that uses C math library function.
# include <stdio.h>
#include <math.h>
#define PI 3.1416
#define MAX 180
void main ( )
{
int angle;
float x,y;
angle = 0;
printf(" Angle Cos(angle)\n\n");
while(angle <= MAX)
{
x = (PI/MAX)*angle;
y = cos(x);
printf("%15d %13.4f\n", angle, y);
angle = angle + 10;
}
getch();
}