This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Printing 1 to 1000 without loop or conditionals
#include <stdio.h>
#include<conio.h>
int fun(int n) {
--n && fun(n);
return printf( "\n%d", n+1);
}
int main(void) {
fun(1000);
get开发者_高级运维ch();
return 0;
}
this is a program which prints 1 to 1000 without using loops or if-else. Are there other ways of doing that not using loops or if-else.
Recursion is really a method of looping. If you just want to avoid the while, for, and if keywords then you could do something nasty like:
int i = 0;
label:
printf("\n%d", n);
n++;
switch (i) {
case 1000:
break;
default:
goto label;
}
This works well and is pretty fast :)
#include <stdio.h>
int main()
{
printf("1\n");
printf("2\n");
printf("3\n");
printf("4\n");
printf("5\n");
printf("6\n");
printf("7\n");
printf("8\n");
printf("9\n");
printf("10\n");
printf("11\n");
printf("12\n");
printf("13\n");
printf("14\n");
printf("15\n");
printf("16\n");
printf("17\n");
printf("18\n");
printf("19\n");
printf("20\n");
printf("21\n");
printf("22\n");
printf("23\n");
printf("24\n");
printf("25\n");
printf("26\n");
printf("27\n");
printf("28\n");
printf("29\n");
printf("30\n");
printf("31\n");
printf("32\n");
printf("33\n");
printf("34\n");
printf("35\n");
printf("36\n");
printf("37\n");
printf("38\n");
printf("39\n");
printf("40\n");
printf("41\n");
printf("42\n");
printf("43\n");
printf("44\n");
printf("45\n");
printf("46\n");
printf("47\n");
printf("48\n");
printf("49\n");
printf("50\n");
printf("51\n");
printf("52\n");
printf("53\n");
printf("54\n");
printf("55\n");
printf("56\n");
printf("57\n");
printf("58\n");
printf("59\n");
printf("60\n");
printf("61\n");
printf("62\n");
printf("63\n");
printf("64\n");
printf("65\n");
printf("66\n");
printf("67\n");
printf("68\n");
printf("69\n");
printf("70\n");
printf("71\n");
printf("72\n");
printf("73\n");
printf("74\n");
printf("75\n");
printf("76\n");
printf("77\n");
printf("78\n");
printf("79\n");
printf("80\n");
printf("81\n");
printf("82\n");
printf("83\n");
printf("84\n");
printf("85\n");
printf("86\n");
printf("87\n");
printf("88\n");
printf("89\n");
printf("90\n");
printf("91\n");
printf("92\n");
printf("93\n");
printf("94\n");
printf("95\n");
printf("96\n");
printf("97\n");
printf("98\n");
printf("99\n");
printf("100\n");
printf("101\n");
printf("102\n");
printf("103\n");
printf("104\n");
printf("105\n");
printf("106\n");
printf("107\n");
printf("108\n");
printf("109\n");
printf("110\n");
printf("111\n");
printf("112\n");
printf("113\n");
printf("114\n");
printf("115\n");
printf("116\n");
printf("117\n");
printf("118\n");
printf("119\n");
printf("120\n");
printf("121\n");
printf("122\n");
printf("123\n");
printf("124\n");
printf("125\n");
printf("126\n");
printf("127\n");
printf("128\n");
printf("129\n");
printf("130\n");
printf("131\n");
printf("132\n");
printf("133\n");
printf("134\n");
printf("135\n");
printf("136\n");
printf("137\n");
printf("138\n");
printf("139\n");
printf("140\n");
printf("141\n");
printf("142\n");
printf("143\n");
printf("144\n");
printf("145\n");
printf("146\n");
printf("147\n");
printf("148\n");
printf("149\n");
printf("150\n");
printf("151\n");
printf("152\n");
printf("153\n");
printf("154\n");
printf("155\n");
printf("156\n");
printf("157\n");
printf("158\n");
printf("159\n");
printf("160\n");
printf("161\n");
printf("162\n");
printf("163\n");
printf("164\n");
printf("165\n");
printf("166\n");
printf("167\n");
printf("168\n");
printf("169\n");
printf("170\n");
printf("171\n");
printf("172\n");
printf("173\n");
printf("174\n");
printf("175\n");
printf("176\n");
printf("177\n");
printf("178\n");
printf("179\n");
printf("180\n");
printf("181\n");
printf("182\n");
printf("183\n");
printf("184\n");
printf("185\n");
printf("186\n");
printf("187\n");
printf("188\n");
printf("189\n");
printf("190\n");
printf("191\n");
printf("192\n");
printf("193\n");
printf("194\n");
printf("195\n");
printf("196\n");
printf("197\n");
printf("198\n");
printf("199\n");
printf("200\n");
printf("201\n");
printf("202\n");
printf("203\n");
printf("204\n");
printf("205\n");
printf("206\n");
printf("207\n");
printf("208\n");
printf("209\n");
printf("210\n");
printf("211\n");
printf("212\n");
printf("213\n");
printf("214\n");
printf("215\n");
printf("216\n");
printf("217\n");
printf("218\n");
printf("219\n");
printf("220\n");
printf("221\n");
printf("222\n");
printf("223\n");
printf("224\n");
printf("225\n");
printf("226\n");
printf("227\n");
printf("228\n");
printf("229\n");
printf("230\n");
printf("231\n");
printf("232\n");
printf("233\n");
printf("234\n");
printf("235\n");
printf("236\n");
printf("237\n");
printf("238\n");
printf("239\n");
printf("240\n");
printf("241\n");
printf("242\n");
printf("243\n");
printf("244\n");
printf("245\n");
printf("246\n");
printf("247\n");
printf("248\n");
printf("249\n");
printf("250\n");
printf("251\n");
printf("252\n");
printf("253\n");
printf("254\n");
printf("255\n");
printf("256\n");
printf("257\n");
printf("258\n");
printf("259\n");
printf("260\n");
printf("261\n");
printf("262\n");
printf("263\n");
printf("264\n");
printf("265\n");
printf("266\n");
printf("267\n");
printf("268\n");
printf("269\n");
printf("270\n");
printf("271\n");
printf("272\n");
printf("273\n");
printf("274\n");
printf("275\n");
printf("276\n");
printf("277\n");
printf("278\n");
printf("279\n");
printf("280\n");
printf("281\n");
printf("282\n");
printf("283\n");
printf("284\n");
printf("285\n");
printf("286\n");
printf("287\n");
printf("288\n");
printf("289\n");
printf("290\n");
printf("291\n");
printf("292\n");
printf("293\n");
printf("294\n");
printf("295\n");
printf("296\n");
printf("297\n");
printf("298\n");
printf("299\n");
printf("300\n");
printf("301\n");
printf("302\n");
printf("303\n");
printf("304\n");
printf("305\n");
printf("306\n");
printf("307\n");
printf("308\n");
printf("309\n");
printf("310\n");
printf("311\n");
printf("312\n");
printf("313\n");
printf("314\n");
printf("315\n");
printf("316\n");
printf("317\n");
printf("318\n");
printf("319\n");
printf("320\n");
printf("321\n");
printf("322\n");
printf("323\n");
printf("324\n");
printf("325\n");
printf("326\n");
printf("327\n");
printf("328\n");
printf("329\n");
printf("330\n");
printf("331\n");
printf("332\n");
printf("333\n");
printf("334\n");
printf("335\n");
printf("336\n");
printf("337\n");
printf("338\n");
printf("339\n");
printf("340\n");
printf("341\n");
printf("342\n");
printf("343\n");
printf("344\n");
printf("345\n");
printf("346\n");
printf("347\n");
printf("348\n");
printf("349\n");
printf("350\n");
printf("351\n");
printf("352\n");
printf("353\n");
printf("354\n");
printf("355\n");
printf("356\n");
printf("357\n");
printf("358\n");
printf("359\n");
printf("360\n");
printf("361\n");
printf("362\n");
printf("363\n");
printf("364\n");
printf("365\n");
printf("366\n");
printf("367\n");
printf("368\n");
printf("369\n");
printf("370\n");
printf("371\n");
printf("372\n");
printf("373\n");
printf("374\n");
printf("375\n");
printf("376\n");
printf("377\n");
printf("378\n");
printf("379\n");
printf("380\n");
printf("381\n");
printf("382\n");
printf("383\n");
printf("384\n");
printf("385\n");
printf("386\n");
printf("387\n");
printf("388\n");
printf("389\n");
printf("390\n");
printf("391\n");
printf("392\n");
printf("393\n");
printf("394\n");
printf("395\n");
printf("396\n");
printf("397\n");
printf("398\n");
printf("399\n");
printf("400\n");
printf("401\n");
printf("402\n");
printf("403\n");
printf("404\n");
printf("405\n");
printf("406\n");
printf("407\n");
printf("408\n");
printf("409\n");
printf("410\n");
printf("411\n");
printf("412\n");
printf("413\n");
printf("414\n");
printf("415\n");
printf("416\n");
printf("417\n");
printf("418\n");
printf("419\n");
printf("420\n");
printf("421\n");
printf("422\n");
printf("423\n");
printf("424\n");
printf("425\n");
printf("426\n");
printf("427\n");
printf("428\n");
printf("429\n");
printf("430\n");
printf("431\n");
printf("432\n");
printf("433\n");
printf("434\n");
printf("435\n");
printf("436\n");
printf("437\n");
printf("438\n");
printf("439\n");
printf("440\n");
printf("441\n");
printf("442\n");
printf("443\n");
printf("444\n");
printf("445\n");
printf("446\n");
printf("447\n");
printf("448\n");
printf("449\n");
printf("450\n");
printf("451\n");
printf("452\n");
printf("453\n");
printf("454\n");
printf("455\n");
printf("456\n");
printf("457\n");
printf("458\n");
printf("459\n");
printf("460\n");
printf("461\n");
printf("462\n");
printf("463\n");
printf("464\n");
printf("465\n");
printf("466\n");
printf("467\n");
printf("468\n");
printf("469\n");
printf("470\n");
printf("471\n");
printf("472\n");
printf("473\n");
printf("474\n");
printf("475\n");
printf("476\n");
printf("477\n");
printf("478\n");
printf("479\n");
printf("480\n");
printf("481\n");
printf("482\n");
printf("483\n");
printf("484\n");
printf("485\n");
printf("486\n");
printf("487\n");
printf("488\n");
printf("489\n");
printf("490\n");
printf("491\n");
printf("492\n");
printf("493\n");
printf("494\n");
printf("495\n");
printf("496\n");
printf("497\n");
printf("498\n");
printf("499\n");
printf("500\n");
printf("501\n");
printf("502\n");
printf("503\n");
printf("504\n");
printf("505\n");
printf("506\n");
printf("507\n");
printf("508\n");
printf("509\n");
printf("510\n");
printf("511\n");
printf("512\n");
printf("513\n");
printf("514\n");
printf("515\n");
printf("516\n");
printf("517\n");
printf("518\n");
printf("519\n");
printf("520\n");
printf("521\n");
printf("522\n");
printf("523\n");
printf("524\n");
printf("525\n");
printf("526\n");
printf("527\n");
printf("528\n");
printf("529\n");
printf("530\n");
printf("531\n");
printf("532\n");
printf("533\n");
printf("534\n");
printf("535\n");
printf("536\n");
printf("537\n");
printf("538\n");
printf("539\n");
printf("540\n");
printf("541\n");
printf("542\n");
printf("543\n");
printf("544\n");
printf("545\n");
printf("546\n");
printf("547\n");
printf("548\n");
printf("549\n");
printf("550\n");
printf("551\n");
printf("552\n");
printf("553\n");
printf("554\n");
printf("555\n");
printf("556\n");
printf("557\n");
printf("558\n");
printf("559\n");
printf("560\n");
printf("561\n");
printf("562\n");
printf("563\n");
printf("564\n");
printf("565\n");
printf("566\n");
printf("567\n");
printf("568\n");
printf("569\n");
printf("570\n");
printf("571\n");
printf("572\n");
printf("573\n");
printf("574\n");
printf("575\n");
printf("576\n");
printf("577\n");
printf("578\n");
printf("579\n");
printf("580\n");
printf("581\n");
printf("582\n");
printf("583\n");
printf("584\n");
printf("585\n");
printf("586\n");
printf("587\n");
printf("588\n");
printf("589\n");
printf("590\n");
printf("591\n");
printf("592\n");
printf("593\n");
printf("594\n");
printf("595\n");
printf("596\n");
printf("597\n");
printf("598\n");
printf("599\n");
printf("600\n");
printf("601\n");
printf("602\n");
printf("603\n");
printf("604\n");
printf("605\n");
printf("606\n");
printf("607\n");
printf("608\n");
printf("609\n");
printf("610\n");
printf("611\n");
printf("612\n");
printf("613\n");
printf("614\n");
printf("615\n");
printf("616\n");
printf("617\n");
printf("618\n");
printf("619\n");
printf("620\n");
printf("621\n");
printf("622\n");
printf("623\n");
printf("624\n");
printf("625\n");
printf("626\n");
printf("627\n");
printf("628\n");
printf("629\n");
printf("630\n");
printf("631\n");
printf("632\n");
printf("633\n");
printf("634\n");
printf("635\n");
printf("636\n");
printf("637\n");
printf("638\n");
printf("639\n");
printf("640\n");
printf("641\n");
printf("642\n");
printf("643\n");
printf("644\n");
printf("645\n");
printf("646\n");
printf("647\n");
printf("648\n");
printf("649\n");
printf("650\n");
printf("651\n");
printf("652\n");
printf("653\n");
printf("654\n");
printf("655\n");
printf("656\n");
printf("657\n");
printf("658\n");
printf("659\n");
printf("660\n");
printf("661\n");
printf("662\n");
printf("663\n");
printf("664\n");
printf("665\n");
printf("666\n");
printf("667\n");
printf("668\n");
printf("669\n");
printf("670\n");
printf("671\n");
printf("672\n");
printf("673\n");
printf("674\n");
printf("675\n");
printf("676\n");
printf("677\n");
printf("678\n");
printf("679\n");
printf("680\n");
printf("681\n");
printf("682\n");
printf("683\n");
printf("684\n");
printf("685\n");
printf("686\n");
printf("687\n");
printf("688\n");
printf("689\n");
printf("690\n");
printf("691\n");
printf("692\n");
printf("693\n");
printf("694\n");
printf("695\n");
printf("696\n");
printf("697\n");
printf("698\n");
printf("699\n");
printf("700\n");
printf("701\n");
printf("702\n");
printf("703\n");
printf("704\n");
printf("705\n");
printf("706\n");
printf("707\n");
printf("708\n");
printf("709\n");
printf("710\n");
printf("711\n");
printf("712\n");
printf("713\n");
printf("714\n");
printf("715\n");
printf("716\n");
printf("717\n");
printf("718\n");
printf("719\n");
printf("720\n");
printf("721\n");
printf("722\n");
printf("723\n");
printf("724\n");
printf("725\n");
printf("726\n");
printf("727\n");
printf("728\n");
printf("729\n");
printf("730\n");
printf("731\n");
printf("732\n");
printf("733\n");
printf("734\n");
printf("735\n");
printf("736\n");
printf("737\n");
printf("738\n");
printf("739\n");
printf("740\n");
printf("741\n");
printf("742\n");
printf("743\n");
printf("744\n");
printf("745\n");
printf("746\n");
printf("747\n");
printf("748\n");
printf("749\n");
printf("750\n");
printf("751\n");
printf("752\n");
printf("753\n");
printf("754\n");
printf("755\n");
printf("756\n");
printf("757\n");
printf("758\n");
printf("759\n");
printf("760\n");
printf("761\n");
printf("762\n");
printf("763\n");
printf("764\n");
printf("765\n");
printf("766\n");
printf("767\n");
printf("768\n");
printf("769\n");
printf("770\n");
printf("771\n");
printf("772\n");
printf("773\n");
printf("774\n");
printf("775\n");
printf("776\n");
printf("777\n");
printf("778\n");
printf("779\n");
printf("780\n");
printf("781\n");
printf("782\n");
printf("783\n");
printf("784\n");
printf("785\n");
printf("786\n");
printf("787\n");
printf("788\n");
printf("789\n");
printf("790\n");
printf("791\n");
printf("792\n");
printf("793\n");
printf("794\n");
printf("795\n");
printf("796\n");
printf("797\n");
printf("798\n");
printf("799\n");
printf("800\n");
printf("801\n");
printf("802\n");
printf("803\n");
printf("804\n");
printf("805\n");
printf("806\n");
printf("807\n");
printf("808\n");
printf("809\n");
printf("810\n");
printf("811\n");
printf("812\n");
printf("813\n");
printf("814\n");
printf("815\n");
printf("816\n");
printf("817\n");
printf("818\n");
printf("819\n");
printf("820\n");
printf("821\n");
printf("822\n");
printf("823\n");
printf("824\n");
printf("825\n");
printf("826\n");
printf("827\n");
printf("828\n");
printf("829\n");
printf("830\n");
printf("831\n");
printf("832\n");
printf("833\n");
printf("834\n");
printf("835\n");
printf("836\n");
printf("837\n");
printf("838\n");
printf("839\n");
printf("840\n");
printf("841\n");
printf("842\n");
printf("843\n");
printf("844\n");
printf("845\n");
printf("846\n");
printf("847\n");
printf("848\n");
printf("849\n");
printf("850\n");
printf("851\n");
printf("852\n");
printf("853\n");
printf("854\n");
printf("855\n");
printf("856\n");
printf("857\n");
printf("858\n");
printf("859\n");
printf("860\n");
printf("861\n");
printf("862\n");
printf("863\n");
printf("864\n");
printf("865\n");
printf("866\n");
printf("867\n");
printf("868\n");
printf("869\n");
printf("870\n");
printf("871\n");
printf("872\n");
printf("873\n");
printf("874\n");
printf("875\n");
printf("876\n");
printf("877\n");
printf("878\n");
printf("879\n");
printf("880\n");
printf("881\n");
printf("882\n");
printf("883\n");
printf("884\n");
printf("885\n");
printf("886\n");
printf("887\n");
printf("888\n");
printf("889\n");
printf("890\n");
printf("891\n");
printf("892\n");
printf("893\n");
printf("894\n");
printf("895\n");
printf("896\n");
printf("897\n");
printf("898\n");
printf("899\n");
printf("900\n");
printf("901\n");
printf("902\n");
printf("903\n");
printf("904\n");
printf("905\n");
printf("906\n");
printf("907\n");
printf("908\n");
printf("909\n");
printf("910\n");
printf("911\n");
printf("912\n");
printf("913\n");
printf("914\n");
printf("915\n");
printf("916\n");
printf("917\n");
printf("918\n");
printf("919\n");
printf("920\n");
printf("921\n");
printf("922\n");
printf("923\n");
printf("924\n");
printf("925\n");
printf("926\n");
printf("927\n");
printf("928\n");
printf("929\n");
printf("930\n");
printf("931\n");
printf("932\n");
printf("933\n");
printf("934\n");
printf("935\n");
printf("936\n");
printf("937\n");
printf("938\n");
printf("939\n");
printf("940\n");
printf("941\n");
printf("942\n");
printf("943\n");
printf("944\n");
printf("945\n");
printf("946\n");
printf("947\n");
printf("948\n");
printf("949\n");
printf("950\n");
printf("951\n");
printf("952\n");
printf("953\n");
printf("954\n");
printf("955\n");
printf("956\n");
printf("957\n");
printf("958\n");
printf("959\n");
printf("960\n");
printf("961\n");
printf("962\n");
printf("963\n");
printf("964\n");
printf("965\n");
printf("966\n");
printf("967\n");
printf("968\n");
printf("969\n");
printf("970\n");
printf("971\n");
printf("972\n");
printf("973\n");
printf("974\n");
printf("975\n");
printf("976\n");
printf("977\n");
printf("978\n");
printf("979\n");
printf("980\n");
printf("981\n");
printf("982\n");
printf("983\n");
printf("984\n");
printf("985\n");
printf("986\n");
printf("987\n");
printf("988\n");
printf("989\n");
printf("990\n");
printf("991\n");
printf("992\n");
printf("993\n");
printf("994\n");
printf("995\n");
printf("996\n");
printf("997\n");
printf("998\n");
printf("999\n");
printf("1000\n");
return 0;
}
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
精彩评论