Init

.clang-format

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+IndentWidth: 4

.gitignore

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+*.exe

.vscode/c_cpp_properties.json

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+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "C:/mingw-w64/include",
+                "C:/mingw-w64/x86_64-w64-mingw32/include"
+            ],
+            "defines": [],
+            "compilerPath": "gcc",
+            "intelliSenseMode": "clang-x64",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "browse": {
+                "limitSymbolsToIncludedHeaders": true
+            }
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

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+{
+    "files.associations": {
+        ".env": "env",
+        "ostream": "cpp",
+        "iosfwd": "cpp"
+    }
+}

.vscode/tasks.json

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

0225/1.c

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+#include <stdio.h>
+#define PI 3.14159265358979323846
+
+int main() {
+    double r;
+    scanf("%lf", &r);
+    printf("%f\n%f", 4 * PI * r * r, PI * r * r * r * 4 / 3);
+    return 0;
+}

0225/2.c

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+#include <math.h>
+#include <stdio.h>
+#define square(x) ((x) * (x))
+
+int main() {
+    int x1, y1, x2, y2;
+    scanf("%d %d %d %d", &x1, &y1, &x2, &y2);
+    printf("%f", sqrt(square(x2 - x1) + square(y2 - y1)));
+}

0225/3.c

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+#include <stdio.h>
+
+int main() {
+    int num;
+    scanf("%d", &num);
+    printf("%d %d %d\n", num / 100, num / 10 % 10, num % 10);
+    return 0;
+}

0225/4.c

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+#include <stdio.h>
+
+int main() {
+    char a, b;
+    scanf("%c %c", &a, &b);
+    char c = a;
+    a = b;
+    b = c;
+    printf("%c %c", a, b);
+    return 0;
+}

0225/5.c

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+#include <stdio.h>
+int main(){
+    char c;
+    scanf("%c", &c);
+    printf("%c %c\n%d %d %d", c, c + 1, c - 1, c, c + 1);
+}

0225/txt

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+p32-33