c programing

code:
1#include <stdio.h>
2
3int main()
4 {
5 int *ptr;
6 int x = 12345, y;
7
8 ptr = &x;
9 printf( "The value of ptr is %p\n", ptr );
10 printf( "The address of x is %p\n\n", &x );
11
12 printf("Total characters printed on this line is:%n",&y );
13 printf( " %d\n\n", y );
14
15 y = printf( "This line has 28 characters\n" );
16 printf( "%d characters were printed\n\n", y );
17
18 printf( "Printing a %% in a format control string\n" );
19
20 return 0;
21}

đây là kết quả trả về:

The value of ptr is 0065FDF0
The address of x is 0065FDF0
Total characters printed on this line is: 41
This line has 28 characters
28 characters were printed
Printing a % in a format control string

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