c++ - How to debug this code for splitting an array by space? -

i need write program sentence , split words delimiter(space);so i've wrote code below doesn't seem working properly. idea's how debug code? in advance help. here's come far:

#include <iostream>  using namespace std; const int buffer_size=255;   int main() {               char* buffer;        buffer=new char[255];        cout<<"enter statement:"<<endl;     cin.getline(buffer,buffer_size);     int q=0, numofwords=1;     while(buffer[q] != '\0'){         if(buffer[q]==' ') numofwords ++;         q ++;     }     char** wordsarray;     wordsarray= new char* [numofwords];        int lenofeachword=0, num=0;     int* sizeofwords=new int [numofwords];     for(int i=0;i<q;i++){         if(buffer[i]==' ')         {             sizeofwords[num]=lenofeachword;             wordsarray[num]=new char[lenofeachword];             num++;          }else{         lenofeachword++;         }        }     sizeofwords[num]=lenofeachword;       wordsarray[num]=new char[lenofeachword];      int k=0;     for(int i=0; i<numofwords;i++){          for(int j=0;j<sizeofwords[i];j++)         {             wordsarray[i][j]=buffer[k];             k++;          }         k++;     }     for(int i=0; i<numofwords;i++){              for(int j=0;j<sizeofwords[i];j++)             {                 cout<<wordsarray[i][j];              }         cout<<endl;          }  } 

#include <iostream> #include <stdio.h> #include <cstring> using namespace std;  int main() {     int size, j;     char s[1005];     gets(s);     scanf("%d", &size);     j=0;     for(int i=size; i<strlen(s); i+=size) {         for(; j<i; j++) {             printf("%c", s[j]);         }         printf(" ");     }     return 0; }