C语言中的逗号操作符

--------------------------------------------------------------------------------------------

#include <stdio.h>

int foo1()
{
	printf("1\n");
	return 1;
}
int foo2()
{
	printf("2\n");
	return 2;
}
int foo3()
{
	printf("3\n");
	return 3;
}
int main(void)
{

	int n = (foo1(),foo2(),foo3());

	printf("n:%d\n",n);
	
	return 0;
}

--------------------------------------------------------------------------------------------

运行结果：

1
2
3
n:3