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byuma
2015.12.08
采纳率:51% 等级:7
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123456789101112131415161718192021222324252627282930313233343536373839404142434445#include #include "stdafx.h"#include#include "stdio.h"#include "stdlib.h" void main(){ int day,month,year,sum,leap; cout<>year; cout<>month; cout<>day; //计算某月以前月份的天数 switch(month){ case 1:sum=0;break; case 2:sum=31;break; case 3:sum=59;break; case 4:sum=90;break; case 5:sum=120;break; case 6:sum=151;break; case 7:sum=181;break; case 8:sum=212;break; case 9:sum=243;break; case 10:sum=273;break; case 11:sum=304;break; case 12:sum=334;break; default:cout<2)sum=sum+1; cout<
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