初步完成实验1

.vscode/launch.json

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+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "(gdb) 启动",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "输入程序名称，例如 ${workspaceFolder}/a.out",
+            "args": [],
+            "stopAtEntry": false,
+            "cwd": "${fileDirname}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "为 gdb 启用整齐打印",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                },
+                {
+                    "description": "将反汇编风格设置为 Intel",
+                    "text": "-gdb-set disassembly-flavor intel",
+                    "ignoreFailures": true
+                }
+            ]
+        }
+
+    ]
+}

.vscode/tasks.json

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+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: gcc 生成活动文件",
+            "command": "/usr/bin/gcc",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "调试器生成的任务。"
+        }
+    ],
+    "version": "2.0.0"
+}

test1.cpp

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+#include <iostream>
+#include <iomanip>
+
+using namespace std;
+
+typedef struct book
+{
+    string no;
+    string name;
+    double price;
+} book;
+
+int main()
+{
+    book books[100];
+    int i = 0;
+
+    // input
+    for (i; true; i++)
+    {
+        cin >> books[i].no >> books[i].name >> books[i].price;
+        if (books[i].no == "0" && books[i].name == "0" && books[i].price == 0)
+        {
+            break;
+        }
+    }
+    // output
+    cout << i + 1 << endl;
+    for (int j = 0; j <= i; j++)
+    {
+        cout << books[j].no << "\t" << books[j].name << "\t" << setprecision(2) << books[j].price << endl;
+    }
+}