c++ - Whats wrong with the following code -

i have written down code in c++ make words appear in array string input. doesn't works due overflow or something. compiler doesn't show error though.

 #include <iostream>  #include <stdio.h>  #include <string.h>  using namespace std;  int main()  {     char a[100];     gets(a);     char b[100][100];     int i=0;     for(int j=0;j<strlen(a);j++) //runs loop words     {         int k=0;                 {             b[i][k]=a[j];             k++;                     }         while(a[j]!=' ');         i++;     }     cout<<b[0][0];     return 0; } 

if you're going use c strings, need add null terminator @ end of each string

do {     b[i][k]=a[j];     k++; } while(j+k<strlen(a) && a[j+k]!=' '); b[i][k] = '\0'; 

as ppeterka noted, need change loop exit condition avoid infinite loop.

note repeated calls strlen here , in code wasteful. should consider calculating once before for loop instead.