| 1 | | Let's start with a really simple example. Try to complile the following program: |
| 2 | | |
| 3 | | |
| 4 | | |
| 5 | | \begin{DocInclude}\begin{verbatim}#include <itpp/itbase.h> |
| 6 | | |
| 7 | | using namespace itpp; |
| 8 | | |
| 9 | | //These lines are needed for use of cout and endl |
| 10 | | using std::cout; |
| 11 | | using std::endl; |
| 12 | | |
| 13 | | int main() |
| 14 | | { |
| 15 | | //Declare vectors and matricies: |
| 16 | | vec a, b, c; |
| 17 | | mat A, B; |
| 18 | | |
| 19 | | //Use the function linspace to define a vector: |
| 20 | | a = linspace(1.0, 2.0, 10); |
| 21 | | |
| 22 | | //Use a string of values to define a vector: |
| 23 | | b = "0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0"; |
| 24 | | |
| 25 | | //Add two vectors: |
| 26 | | c = a + b; |
| 27 | | |
| 28 | | //Print results: |
| 29 | | cout << "a = " << a << endl; |
| 30 | | cout << "b = " << b << endl; |
| 31 | | cout << "c = " << c << endl; |
| 32 | | |
| 33 | | //Use a string to define a matrix: |
| 34 | | A = "1.0 2.0;3.0 4.0"; |
| 35 | | |
| 36 | | //Calculate the inverse of matrix A: |
| 37 | | B = inv(A); |
| 38 | | |
| 39 | | //Print results: |
| 40 | | cout << "A = " << A << endl; |
| 41 | | cout << "B = " << B << endl; |
| 42 | | |
| 43 | | //Exit program: |
| 44 | | return 0; |
| 45 | | |
| 46 | | } |
| 47 | | \end{verbatim} |
| 48 | | \end{DocInclude} |
| 49 | | |
| 50 | | |
| 51 | | When you run this program, the output shall look like this |
| 52 | | |
| 53 | | |
| 54 | | |
| 55 | | \begin{DocInclude}\begin{verbatim}a = [1 1.11111 1.22222 1.33333 1.44444 1.55556 1.66667 1.77778 1.88889 2] |
| 56 | | b = [0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1] |
| 57 | | c = [1.1 1.31111 1.52222 1.73333 1.94444 2.15556 2.36667 2.57778 2.78889 3] |
| 58 | | A = [[1 2] |
| 59 | | [3 4]] |
| 60 | | B = [[-2 1] |
| 61 | | [1.5 -0.5]] |
| 62 | | \end{verbatim} |
| 63 | | \end{DocInclude} |
| 64 | | |
| 65 | | |
| 66 | | If this is what you see, then congratulations! You have managed to compile your first it++ program! |
