[C] struct initialization, swap
- initialization
#include <stdio.h>
typedef struct Book
{
char title[30];
char author[20];
int series;
}Book;
int main(void)
{
Book b1 = {"Harry Potter", "J. K. Rowling", 7}, b2 = {"The Lord of the Rings", "J. R. R. Tolkien", 3};
puts("--------------------");
puts(" * struct * ");
puts("--------------------");
printf(" b1 : %10s %26s %7d books \n", b1.title, b1.author, b1.series);
printf(" b2 : %10s %20s %4d books \n", b2.title, b2.author, b2.series);
return 0;
/*
--------------------
* struct *
--------------------
b1 : Harry Potter J. K. Rowling 7 books
b2 : The Lord of the Rings J. R. R. Tolkien 3 books
*/
}
- swap
#include <stdio.h>
typedef struct Book
{
char title[30];
char author[20];
int series;
}Book;
int main(void)
{
Book b1 = {"Harry Potter", "J. K. Rowling", 7}, b2 = {"The Lord of the Rings", "J. R. R. Tolkien", 3};
Book tmp;
puts("--------------------");
puts(" * before struct swap * ");
puts("--------------------");
printf(" b1 : %10s %26s %7d books \n", b1.title, b1.author, b1.series);
printf(" b2 : %10s %20s %4d books \n", b2.title, b2.author, b2.series);
puts("----------------------------------");
tmp = b1;
b1 = b2;
b2 = tmp;
puts(" * after swap * ");
printf(" b1 : %10s %20s %4d books \n", b1.title, b1.author, b1.series);
printf(" b2 : %10s %26s %7d books \n", b2.title, b2.author, b2.series);
return 0;
/*
--------------------
* before struct swap *
--------------------
b1 : Harry Potter J. K. Rowling 7 books
b2 : The Lord of the Rings J. R. R. Tolkien 3 books
----------------------------------
* after swap *
b1 : The Lord of the Rings J. R. R. Tolkien 3 books
b2 : Harry Potter J. K. Rowling 7 books
*/
}