数据结构与算法(C++)——三数交换

1.Write a function template swap3, for 3 input numbers, a1, a2, a3, after this

function, a1>=a2>=a3.

Main函数----------------------------------------------------------------------------------------------- #include

using namespace std;

template

void swap3(T a, T b, T c)

{

T tr;

if (b > a){ tr = a; a = b; b = tr; }

if (c > a){ tr = a; a = c; c = tr; }

if (c > b){ tr = b; b = c; c = tr; }

cout << a << ">=" << b << ">=" << c << endl;

}

int main()

{

double a1,a2,a3;

cin >> a1>> a2>>a3;

swap3(a1, a2, a3);

return 0;

}

输出-------------------------------------------------------------------------------------------------