#include <bits/stdc++.h> using namespace std; char * remove_spaces(char * str) { int i = 0, j = 0; while (str[i]) { if ( str[i] != ' ') // if (str[i] != ' ') { str[j++] = str[i] ; } i++ ; } str[j] = '\0'; return str ; } int main() { cout << "Hello World!\n"; char str1[] = " g e e k s " ; cout << remove_spaces(str1) << endl; return 0; }