0
Yes you (usually) can, though it may depend on your particular C implementation.
// A complete (if useless) C program to compute the square root of 2 and then exit.
// No headers required.
double sqroot(const double s) {
double xn = s / 2.0;
double lastX = 0.0;
while(xn != lastX) {
lastX = xn;
xn = (xn + s/xn) / 2.0;
}
return xn;
}
int main() {
double sqrt2 = sqrt(2);
return 0;
}
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