循环语句的效率

 1 #include <iostream>
 2 
 3 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
 4 using namespace std;
 5 int main(int argc, char** argv) {
 6     int a,b,c;
 7     int smallest;
 8     cout<<"a  b  c"<<endl;
 9     cin>>a>>b>>c;
10     if (a<=b)    //外层条件语句
11     {
12         if (a<=c)    //内层条件语句
13            smallest=a;
14         else
15            smallest=c;
16     }
17     else
18     {
19        if (b<=c)    //内层条件语句
20            smallest=b;
21        else
22            smallest=c;
23     }
24     cout<<"Smallest="<<smallest<<endl;
25     return 0;
26 }