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疑惑:一道C++的小程序,不理解 已有4人參與
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求一個日期對應(yīng)的星期幾 (這是在JAVA書上看到的,我把它轉(zhuǎn)成了C++),但是,里面的一個語句(total=year-1980+(year-1980+3)/4)不懂是在干什么,求大神解答。。。。。自己感覺應(yīng)該是(total=(year-1980)*365+(year-1980+3)/4).。。。你們覺得呢,我哪里理解錯了嗎 #include<iostream> using namespace std; void main() { int year=2006,month=8,day=18,total,week,i; bool leap=false; leap=(year%400==0)||(year%100!=0)&&(year%4==0); week=1; //起始日1979-12-31是Monday total=(year-1980)+(year-1980+3)/4; //求平(閏)年累計的總天數(shù) for(i=1;i<=month-1;i++) { switch(i) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: total+=31;break; case 4: case 6: case 9: case 11:total+=30;break; case 2: if(leap) total+=29; else total+=28; break; } } total+=day; week=(week+total)%7; cout<<"date "<<year<<"-"<<month<<"-"<<day<<" is "; switch(week) { case 0: cout<<"Sunday"<<endl; break; case 1: cout<<"Monday"<<endl; break; case 2: cout<<"Tuesday"<<endl; break; case 3: cout<<"Wednesday"<<endl; break; case 4: cout<<"Thursday"<<endl; break; case 5: cout<<"Friday"<<endl; break; case 6: cout<<"Saturday"<<endl; break; } } |
至尊木蟲 (職業(yè)作家)
老花匠

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