The C++ Program: tpk.cc
1 /* tpk.cc -- Knuth's TPK program in the programming language C++ */
2
3 #include <iostream.h>
4 #include <math.h> // smart header file (C and C++); "-lm" required
5
6 /* f(x) = sqrt(|x|) + 5*x**3 */
7 double f (double x) {
8 return (sqrt(fabs(x)) + 5.0*pow(x,3.0));
9 }
10
11 int main (int argc, char** argv) {
12 double A [11];
13
14 /* Read in the values of the array "A" */
15 for (int i=0; i<11; i++) {
16 cin >> A[i];
17 }
18
19 /* In reverse order, apply "f" to each element of "A" and print */
20 for (i=10; i>=0; i--) { // i already declared in previous loop
21 double y = f (A[i]);
22 if (y > 400.0) {
23 cout << i << " TOO LARGE\n";
24 } else {
25 cout << i << ' ' << y << '\n';
26 }
27 }
28
29 return 0;
30 }