cshjin · April 13, 2014 13:50
diff --git a/exchange_two_numbers.c b/exchange_two_numbers.c
 #include <stdio.h>

 int main()
 {
    int a = 5, b = 7;
    a = a ^ b;
    b = a ^ b;
    a = a ^ b;
    printf("a=%d b=%d", a, b);
    return 0;
 }
	#include <stdio.h>

	int main()
	{
	int a = 5, b = 7;
	a = a ^ b;
	b = a ^ b;
	a = a ^ b;
	printf("a=%d b=%d", a, b);
	return 0;
	}