/* V Ramp -> Diamond Trap * By: Pers * Date: April 12, 2017 * * Description: Print a V shape ramp by using 4 for loops *\\///////////////////////// * Change log #1 (v.0.02) - Sep 25, 2017 * * 1- I decided to reform the shape to a more * sofisticated one (Unfolded V Ramp / Diamond Trap) * 2- An even random number generator added to produce * shapes in different sizes [4 - 20] * 3- A pattern pool provided to make the shape more * pleasant. * 3. 4 for loops reduced to 2 loops * */ #include #include #include using std::cout; using std::cin; using std::endl; int main() { /*----- Size generator part -----*/ srand((size_t)time(0)); short row_gen = 4 + rand() % (21 - 4); short row_num = row_gen % 2 ? row_gen - 1 : row_gen; /*--- Pattern generator part ---*/ short patternPool[] = {176, 177, 178, 206, 215, 219}; char randPat = char(patternPool[rand() % 6]); /*---- Auxialary variables ----*/ int x = 0, y = 0; bool isHalf = false; /*----- Logic part -----*/ for (int i = 1; i <= row_num; ++i) { // if loop passed the middle of the shape if (i == row_num / 2 + 1) { x = 1; y = row_num - 1; isHalf = true; } else { // E.g. row_num = 6; // // i j | x y | output //------|------|------- // 1 1 | 3 3 | * // 2 | | ** // 3 | | *** // 4 | | **** // 5 | | ***** // 6 | | ****** //------|------|------- // 2 1 | 2 4 | * // 2 | | ** // 3 | | ** // 4 | | ** // 5 | | ** * // 6 | | ** ** //------|------|------- // 3 1 | 1 5 | * // 2 | | * // 3 | | * // 4 | | * // 5 | | * // 6 | | * * //------|------|------- // 4 1 | 1 5 | * // ... | | // 6 | | * * //------|------|------- // 5 .. | 2 4 | ** ** //------|------|------- // 6 .. | 3 3 | ****** // x = abs(row_num / 2 - (i - 1 + isHalf)); y = row_num / 2 + (i - 1 - (isHalf * (x * 2 - 1))); } for (int j = 1; j <= row_num; ++j) { if (j <= x || j > y) cout << randPat; else cout << ' '; } cout << endl; } }