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*\u002F\n",[930,1137,1138,1167],{"__ignoreMap":981},[985,1139,1140,1143,1146,1150,1153,1156,1160,1163],{"class":987,"line":988},[985,1141,1142],{"class":991},"void",[985,1144,1145],{"class":999},"*",[985,1147,1149],{"class":1148},"s2Zo4"," malloc",[985,1151,1152],{"class":999},"(",[985,1154,1155],{"class":991},"size_t",[985,1157,1159],{"class":1158},"sHdIc"," n",[985,1161,1162],{"class":999},");",[985,1164,1166],{"class":1165},"sHwdD"," \u002F* 分配 n 个字节空间，并将首地址返回 *\u002F\n",[985,1168,1169,1171,1174,1176,1178,1180,1183,1185],{"class":987,"line":1010},[985,1170,1142],{"class":991},[985,1172,1173],{"class":1148}," free",[985,1175,1152],{"class":999},[985,1177,1142],{"class":991},[985,1179,1145],{"class":999},[985,1181,1182],{"class":1158}," p",[985,1184,1162],{"class":999},[985,1186,1187],{"class":1165},"     \u002F* 将 p 所指向的空间释放 *\u002F\n",[919,1189,1190,1191,1194],{},"用 ",[930,1192,1193],{},"using"," 关键字引入类型别名是 C++ 独有的语法，在 C 中需要用 typedef 实现。比如",[976,1196,1198],{"className":978,"code":1197,"language":980,"meta":981,"style":981},"using Array = int[10];\n",[930,1199,1200],{"__ignoreMap":981},[985,1201,1202,1204,1208,1210,1213,1215,1218],{"class":987,"line":988},[985,1203,1193],{"class":1003},[985,1205,1207],{"class":1206},"sBMFI"," Array",[985,1209,1091],{"class":999},[985,1211,1212],{"class":991}," int",[985,1214,1018],{"class":999},[985,1216,1217],{"class":1003},"10",[985,1219,1220],{"class":999},"];\n",[919,1222,1223],{},"在 C 中需比较别扭地写作",[976,1225,1227],{"className":1056,"code":1226,"language":1058,"meta":981,"style":981},"typedef int Array[10];\n",[930,1228,1229],{"__ignoreMap":981},[985,1230,1231,1234,1236,1238,1240,1242],{"class":987,"line":988},[985,1232,1233],{"class":1003},"typedef",[985,1235,1212],{"class":991},[985,1237,1207],{"class":995},[985,1239,1018],{"class":999},[985,1241,1217],{"class":1003},[985,1243,1220],{"class":999},[919,1245,1246],{},"C 中没有带作用域的枚举，也不可以指定枚举的基。",[919,1248,1249],{},"除此外还有一些细节上的问题，我们会在稍后章节说明。",[923,1251,1252],{"id":1252},"例子",[919,1254,1255],{},"这样的 C++ 程序：",[976,1257,1259],{"className":978,"code":1258,"language":980,"meta":981,"style":981},"#include \u003Ciostream>\nusing namespace std;\nint main() {\n    int a{0}, b{0};\n    cin >> a >> b;\n    cout \u003C\u003C a + b \u003C\u003C endl;\n}\n",[930,1260,1261,1276,1288,1302,1326,1343,1367],{"__ignoreMap":981},[985,1262,1263,1267,1270,1273],{"class":987,"line":988},[985,1264,1266],{"class":1265},"s7zQu","#include",[985,1268,1269],{"class":999}," \u003C",[985,1271,936],{"class":1272},"sfazB",[985,1274,1275],{"class":999},">\n",[985,1277,1278,1280,1283,1286],{"class":987,"line":1010},[985,1279,1193],{"class":1003},[985,1281,1282],{"class":991}," namespace",[985,1284,1285],{"class":1206}," std",[985,1287,1075],{"class":999},[985,1289,1291,1293,1296,1299],{"class":987,"line":1290},3,[985,1292,992],{"class":991},[985,1294,1295],{"class":1148}," main",[985,1297,1298],{"class":999},"()",[985,1300,1301],{"class":999}," {\n",[985,1303,1305,1308,1310,1312,1315,1318,1320,1322,1324],{"class":987,"line":1304},4,[985,1306,1307],{"class":991},"    int",[985,1309,996],{"class":995},[985,1311,1000],{"class":999},[985,1313,1314],{"class":1003},"0",[985,1316,1317],{"class":999},"},",[985,1319,1015],{"class":995},[985,1321,1000],{"class":999},[985,1323,1314],{"class":1003},[985,1325,1007],{"class":999},[985,1327,1329,1332,1335,1337,1339,1341],{"class":987,"line":1328},5,[985,1330,1331],{"class":995},"    cin ",[985,1333,1334],{"class":999},">>",[985,1336,1067],{"class":995},[985,1338,1334],{"class":999},[985,1340,1015],{"class":995},[985,1342,1075],{"class":999},[985,1344,1346,1349,1352,1354,1357,1360,1362,1365],{"class":987,"line":1345},6,[985,1347,1348],{"class":995},"    cout ",[985,1350,1351],{"class":999},"\u003C\u003C",[985,1353,1067],{"class":995},[985,1355,1356],{"class":999},"+",[985,1358,1359],{"class":995}," b ",[985,1361,1351],{"class":999},[985,1363,1364],{"class":995}," endl",[985,1366,1075],{"class":999},[985,1368,1370],{"class":987,"line":1369},7,[985,1371,1372],{"class":999},"}\n",[919,1374,1375],{},"你需要改写成这样：",[976,1377,1379],{"className":1056,"code":1378,"language":1058,"meta":981,"style":981},"#include \u003Cstdio.h>\nint main(void) {\n    int a = 0, b = 0;\n    scanf(\"%d%d\", &a, &b);\n    printf(\"%d\", a + b);\n    return 0;\n}\n",[930,1380,1381,1391,1406,1428,1460,1484,1493],{"__ignoreMap":981},[985,1382,1383,1385,1387,1389],{"class":987,"line":988},[985,1384,1266],{"class":1265},[985,1386,1269],{"class":999},[985,1388,948],{"class":1272},[985,1390,1275],{"class":999},[985,1392,1393,1395,1397,1399,1401,1404],{"class":987,"line":1010},[985,1394,992],{"class":991},[985,1396,1295],{"class":1148},[985,1398,1152],{"class":999},[985,1400,1142],{"class":991},[985,1402,1403],{"class":999},")",[985,1405,1301],{"class":999},[985,1407,1408,1410,1413,1415,1418,1420,1422,1424,1426],{"class":987,"line":1290},[985,1409,1307],{"class":991},[985,1411,1067],{"class":1412},"swJcz",[985,1414,973],{"class":999},[985,1416,1417],{"class":1003}," 0",[985,1419,1030],{"class":999},[985,1421,1359],{"class":1412},[985,1423,973],{"class":999},[985,1425,1417],{"class":1003},[985,1427,1075],{"class":999},[985,1429,1430,1433,1435,1438,1441,1443,1445,1448,1450,1452,1454,1457],{"class":987,"line":1304},[985,1431,1432],{"class":1148},"    scanf",[985,1434,1152],{"class":999},[985,1436,1437],{"class":999},"\"",[985,1439,1440],{"class":1412},"%d%d",[985,1442,1437],{"class":999},[985,1444,1030],{"class":999},[985,1446,1447],{"class":999}," &",[985,1449,951],{"class":1412},[985,1451,1030],{"class":999},[985,1453,1447],{"class":999},[985,1455,1456],{"class":1412},"b",[985,1458,1459],{"class":999},");\n",[985,1461,1462,1465,1467,1469,1472,1474,1476,1478,1480,1482],{"class":987,"line":1328},[985,1463,1464],{"class":1148},"    printf",[985,1466,1152],{"class":999},[985,1468,1437],{"class":999},[985,1470,1471],{"class":1412},"%d",[985,1473,1437],{"class":999},[985,1475,1030],{"class":999},[985,1477,1067],{"class":1412},[985,1479,1356],{"class":999},[985,1481,1015],{"class":1412},[985,1483,1459],{"class":999},[985,1485,1486,1489,1491],{"class":987,"line":1345},[985,1487,1488],{"class":1265},"    return",[985,1490,1417],{"class":1003},[985,1492,1075],{"class":999},[985,1494,1495],{"class":987,"line":1369},[985,1496,1372],{"class":999},[919,1498,1499,1500,941,1503,1506,1507,941,1509,1511],{},"这里 ",[930,1501,1502],{},"scanf",[930,1504,1505],{},"printf"," 就是没有 ",[930,1508,940],{},[930,1510,944],{}," 时，C 的输入输出。下一节将重点讲解它们。",[1513,1514,1515],"style",{},"html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}",{"title":981,"searchDepth":988,"depth":1010,"links":1517},[1518,1519,1520,1521,1522],{"id":925,"depth":1010,"text":925},{"id":957,"depth":1010,"text":957},{"id":967,"depth":1010,"text":967},{"id":1123,"depth":1010,"text":1123},{"id":1252,"depth":1010,"text":1252},"md",null,{},{"icon":303},{"title":302,"description":302},"v-3rNWA1vEjxAtbeW4yXZa_vkkpdQgKE9RTfu8pweMo",[1530,1532],{"title":298,"path":299,"stem":300,"description":1531,"icon":280,"children":-1},"我们一直在输出中使用一种语法",{"title":309,"path":310,"stem":311,"description":1533,"icon":303,"children":-1},"就目前而言 C 和 C++ 的语法大致上相似，唯有如下不同",1784618119325]