C strings size and array -

i facing problem . have following sample

std::string key = "30 14 06 03 55 04 03 14 0d 2a"; 

when found size of key string

 size_t sizee = key.size(); 

it comes out 29 that's fine.

but want output

char data[10]; data[0] = 0x30; data[1] = 0x14; data[2] = 0x06; data[3] = 0x03; data[4] = 0x55; data[5] = 0x04; data[6] = 0x03; data[7] = 0x14; data[8] = 0x0d; data[9] = 0x2a; 

the size should come 10 considering 30 1 14 two. size should size of array if string become 00 01 array size should two.

#include <iostream> #include <sstream> #include <vector> #include <iomanip> using namespace std;  int main(){     string key = "30 14 06 03 55 04 03 14 0d 2a";     istringstream iss(key);     vector<char> data;     unsigned x;     iss >> hex;     while(iss >> x){         data.push_back(x);     }     size_t size = data.size();     cout << "char data[" << size << "];" << endl;     for(int i=0;i < size ; ++i){         cout << "data[" << << "] = 0x"               << hex << uppercase << setw(2) << setfill('0') <<  (unsigned)data[i] << ';' << endl;     } } 

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#include <iostream> #include <sstream> #include <vector> #include <iomanip> #include <cstdlib> using namespace std;  int main(){     string key = "30 14 06 03 55 04 03 14 0d 2a";     istringstream iss(key);     vector<char> data;     unsigned x;     iss >> hex;     while(iss >> x){         data.push_back(x);     }     size_t size = data.size();     cout << "char content[" << size << "];" << endl;     unsigned *content;     content = (unsigned*)malloc(size*sizeof(unsigned));     for(int i=0;i < size ; ++i){         //cout << "data[" << << "] = 0x" << hex << uppercase << setw(2) << setfill('0') <<  (unsigned)data[i] << endl;         content[i]=data[i];         cout << "content[" << << "] = 0x" << hex << uppercase << setw(2) << setfill('0') <<  content[i] << endl;     }     if(content[0] == 0x30)         cout << "i it." << endl;     free(content); }