很多程序中的有用的东西

又一次关于程序时间的测定及if——else 的用法，注意该程序的if-else 有多个入口

看代码。。。。

# include<iostream>//if_else 的多个入口
# include<cstdio>
# include<ctime>
# include<cstdlib>
# include<algorithm>
using namespace std;
int main (int argc,char *argv[])
{
    srand((unsigned)time(0));
    //srand((unsigned)time(0));

    int begin,end;
    begin = clock();

    //time_t begin,end;
    //begin=clock();

    //freopen("1.in","r",stdin);
    //freopen("1.out","w",stdout);

    for(int i = 1; i <= 150; i++)
    {
        printf("%d %s",i," ");
        if(i%3==0)
        {
            printf("foo");
        }
        if(i%5==0)
        {
            printf("biz");
        }
        if(i%7==0)
        {
            printf("baZ");
        }
        printf("
");
    }
    end = clock();

    //end=clock();

    cout<<"runtime"<<(double)(end - begin)<<endl;

    //cout<<"runtime: "<<double(end-begin)/CLOCKS_PER_SEC<<endl;

    return 0;
}