C实例 使用第三个变量交换变量

#include <stdio.h>



int main() {

   int a, b, temp;



   a = 11;

   b = 99;



   printf("Values before swapping - \n a = %d, b = %d \n\n", a, b);



   temp  = a;

   a  = b;

   b  = temp;



   printf("Values after swapping - \n a = %d, b = %d \n", a, b);

}