add charcode.c

chapter3/charcode.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main(int argc, char const *argv[])
+{
+    char ch;
+
+    printf("Please input a Character\n");
+    scanf("%c", &ch);
+    printf("The Code for %c is %d.\n", ch, ch);
+    
+    return 0;
+}