python - read somewhat structured text file into array in C++ -

i reproduce following python code in c++, have run trouble. function read_file reads text file, tests first word in each line see if integer. if first word integer (4 or more digits) of words on line added list, z, floats. in other case line added string list. list of lists (z) converted 2d numpy array , returned rest.

def read_file(f):     srchp = re.compile(r'^\d{4,}\s') # beg. of line, digit min 4, white space     f = open(f)     rest = []      z = [x.strip() x in f.readlines()] # read file, strip whitespace @ beg./end of line,     #store in z list of strings. each line @ own offset     in range(len(z)-1,-1,-1):         if not srchp.search(z[i]): #if regex not match             rest.append(z.pop(i)) #append list rest         else:             z[i] = map(float,z[i].split())     f.close()     return numpy.array(z),rest 

what data types should use containers in c++ (vector of vectors? arrays?)? @ end of day want use array statistical analysis. i'd grateful in converting code c++.

the following excerpt file needs read.

temp_inf                          700.000000                    scalar  name                              value                        type  dimensions temp_ref                          25.0000000                    scalar    ***** post1 element table listing *****                                         stat        mixed           mixed           mixed           mixed     elem        x               y               z               temp     23261      0.56292e-03    -0.96401e-02     0.24093          755.91     23262     -0.16635e-03    -0.97998e-02     0.24080          756.25     23263     -0.17039e-03    -0.10374e-01     0.24025          757.65     23264      0.12895e-02    -0.74483e-02     0.24242          751.64     23265      0.67515e-03    -0.80538e-02     0.24209          752.62     23266      0.10350e-02    -0.86614e-02     0.24164          753.92     23267      0.56032e-03    -0.88420e-02     0.24105          756.49     23268      0.13782e-02    -0.10792e-01     0.23978          758.74  

because each row looks holds int , float, decent idea declare struct information.

struct row {   int elem;   float x, y, z, temp; }; 

now can can create vector<row> hold information.

 vector<row> rows; 

for each row, can insert elements so:

row r; cin >> r.elem >> r.x >> r.y >> r.z >> r.temp; rows.push_back(r);