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 +1,14 @@
+#include <stdio.h>
+
+int main()
+{
+    char c1, c2;
+    printf("请输入一个大写字母");
+    c1 = getchar();
+    c2 = c1 + 32;
+    printf("转换后的小写字母为");
+    putchar(c2);
+    putchar('\n');
+
+    return 0;
+}