C言語の書式指定子

#include <stdio.h>
main() {
   char ch = &#39;B&#39;;
   printf("%c</p><p>", ch); //printing character data
   //print decimal or integer data with d and i
   int x = 45, y = 90;
   printf("%d</p><p>", x);
   printf("%i</p><p>", y);
   float f = 12.67;
   printf("%f</p><p>", f); //print float value
   printf("%e</p><p>", f); //print in scientific notation
   int a = 67;
   printf("%o</p><p>", a); //print in octal format
   printf("%x</p><p>", a); //print in hex format
   char str[] = "Hello World";
   printf("%s</p><p>", str);
   printf("%20s</p><p>", str); //shift to the right 20 characters including the string
   printf("%-20s</p><p>", str); //left align
   printf("%20.5s</p><p>", str); //shift to the right 20 characters including the string, and print string up to 5 character
   printf("%-20.5s</p><p>", str); //left align and print string up to 5 character
}

B
45
90
12.670000
1.267000e+001
103
43
Hello World
Hello World
Hello World
Hello
Hello