Convert string to int array C++ -

how convert string int array in c++?
giving input

21 100 30

convert int array

21,100,30

i did similar thing topcoder contest, i'll show how did won't guaranty it's best method.

to convert string int used function (you'll need #include sstream belive)

int nts ( string mys ) {     istringstream buffer(mys);     int value=0;     buffer >> value;     return value; } 

the above function return int string. need split initial string smaller string. used function

int getx(int x,string st) {     int nr=0;     string ret="";     for(int i=0;i<st.size();++i)         {             if(st[i]==' '){                 ++nr;                 continue;                 }             if(nr==x)                 ret = ret + st[i];         }      return nts(ret); } 

where x number want string. if want first 1 type 0. example: if want 100 string write getx(1,"21 100 30"); , return 100 (int).

now have simple convert string vector.

for(int i=0;i<3;++i)     myvector.push_back(getx(i,my_string)); 

hope helps.