Created
May 21, 2015 14:27
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ways of initializing arrays
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| #include <iostream> | |
| int main() | |
| { | |
| const unsigned MAXNUM = 10; | |
| /// initialize 10 int objects | |
| int num[MAXNUM] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; | |
| /// declare 10 int array of pointers | |
| int *ptr_num[MAXNUM]; | |
| for(unsigned i = 0; i < MAXNUM; i++) | |
| ptr_num[i] = &num[i]; | |
| for(auto i2 : ptr_num) | |
| std::cout << *i2 << std::endl; | |
| int (*pptr_num)[MAXNUM] = # /// pptr_num is a pointer to an array of 10 integers | |
| for(auto i6 : *pptr_num) | |
| std::cout << i6 << std::endl; | |
| int(&num_Ref)[MAXNUM] = num; /// num_ref is a reference to an array of 10 integers | |
| for(auto i5 :num_Ref) { | |
| std::cout << i5 << std::endl; | |
| } | |
| char *str[] = {"hello", "world", "fck"}; | |
| for(auto str_ : str) | |
| std::cout << str_ << std::endl; | |
| for(std::string s : str) /// str pointer is assign to string to get the element[0] | |
| for(char c : s) /// for every character in string s | |
| std::cout << c << std::endl; | |
| std::string str_arr[] = {"lool", "hi", "hello", "nahh"}; /// array of strings | |
| for(auto word : str_arr) /// word assumes str_arr as string | |
| for(auto token : word) /// token assumes word as a char /// for every char token in a string word | |
| std::cout << token << std::endl; | |
| return 0; |
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