double mystd(double x[], int xlen) {
double s = 0;
int i;
double xm = mymean(x, xlen);
for (i=0; i<xlen; i++) {
s += (x[i]-xm) * (x[i]-xm);
}
s = s / (xlen-1);
return s;
}
int main(int argc, char const *argv[])
{
// define our array x on the stack
double x[5] = {1.0, 2.0, 3.0, 4.0, 5.0};
int xlen = 5;
double xmean = mymean(x, xlen);
printf("the mean of x is %.3f\n", xmean);
// or we can define it on the heap
int ylen = 5;
double *y = malloc(ylen * sizeof(double));
y[0] = 1.0;
y[1] = 2.0;
y[2] = 3.0;
y[3] = 4.0;
y[4] = 5.0;
double ymean = mymean(y, ylen);
printf("the mean of y is %.3f\n", ymean);
free(y);
return 0;
}
int main()
{
printf ("Mean is %d\n", mymean(5, 1, 2, 3, 4, 5));
}
