forked from johnlawrenceaspden/hobby-code
/
jack.c
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/
jack.c
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#include<stdio.h>
double average(double a, double b)
{
return (a+b)/2;
}
double improve(double x)
{
return (average (x, 11/x));
}
double absolute(double x)
{
if (x<0)
return -x;
else
return x ;
}
int main(void)
{
double c;
double g;
double x;
printf("hello world!\n");
c=average(5,2);
printf("c=%f\n",c);
c=absolute(5);
printf("c=%f\n",c);
c=absolute(-5);
printf("c=%f\n",c);
printf("------\n");
x=1.0;
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
x=improve(x);
printf("x=%f\n",x);
}