Question

编写函数实现两个整型变量值的交换。c语言

Answer 1

int swap(int *a, int *b)
{
int t;
t = *a;
*a = *b;
*b = t;
return 0;
}

Answer 2

void swap(int* a, int* b)
{
int* tmp;
tmp = a;
a = b;
b = tmp;
}