C语言使用第三个变量交换两个变量值

// 
#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);
}