Initial commit: C language learning code

2025-07-20 16:30:56 +08:00
commit 06e24173a6
139 changed files with 9303 additions and 0 deletions
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+#include <stdbool.h>
+#include <string.h>
+#ifdef _WIN32
+#include <windows.h>
+#include <direct.h>
+#endif
+
+// !文件输入输出
+/*
+    1.FILE
+      FILE* fopen(const char * restrict path, const char* restrict mode);
+      int fclose(FILE *stream);
+      fscanf(FILE*....)
+      fprintf(FILE*....)
+    2.打开文件的标准代码
+      FILE*fp = fopen("file","r");
+      if(fp){
+          fscanf(fp....);
+          fclose(fp);
+      }else{
+          printf("打开文件失败");
+      }
+*/
+
+int main()
+{
+    // 设置控制台编码为UTF-8
+#ifdef _WIN32
+    system("chcp 65001 > nul"); // 设置控制台编码为UTF-8
+    SetConsoleOutputCP(65001);  // 设置控制台输出编码
+    SetConsoleCP(65001);        // 设置控制台输入编码
+#endif
+
+    FILE *fp = fopen("test.txt", "r");
+    if (fp)
+    {
+        int num;
+        fscanf(fp,"%d", &num);
+        printf("%d\n", num);
+        fclose(fp);
+    }
+    else
+    {
+        printf("打开文件失败\n");
+    }
+
+    return 0;
+}