Initial commit: C language learning code

课上代码练习/1.1.4/char函数.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main()
+{
+    char c = 'Y';
+    putchar(66);    // B
+    putchar('O');   // O
+    putchar(c);     // Y
+    putchar('\n');
+
+    char a, b;
+    a = getchar();
+    b = getchar();
+    putchar(a);
+    putchar(b);
+
+    putchar(getchar());
+
+    return 0;
+}