知道某月的某天的日期数(day)和星期数(week)，如何算出本月一号的星期数(want)？

[huyidehyd]

各位有什么好的方法，比如今天是7号星期2，如何求出1号是星期几？

[pomelowu]

int day, week, want;
int iTemp;

want = week + 7 - ((day - 1) % 7);

[chupyun]

main()
{
int day,work[6],
work[0]=monday;work[1]=
day=work[1]
for(day=7;day>=1;day__)
{for(work[a];work[

[snow810211]

#include <iostream.h>
char *array[]={"日","一","二","三","四","五","六"};
int Cal_Week(int d,int w)
{
for(int i=d-1;i>=1;i--)
{
if(w==0)
{
w=7;
}
w=w-1;
}
if(w==7)
{
return 0;
}
return w;
}

void main()
{
int week;
cout<<"本月 1 号 星期 ";
week=Cal_Week(16,2);
cout<<array[week]<<endl;
}

哈哈，很弱的方法：）

[xdspower]

want =( week + 7 - ((day - 1) % 7) ) % 7;//这样更好，原来羽战士的只是防止了出现负数，这个可以防止超过7

[pomelowu]

呵呵~~~楼上说得是

[snow810211]

哎呀，真是自叹不如，‘羽战士’的真好~~~
#include <iostream.h>
char *array[]={"日","一","二","三","四","五","六"};
int Cal_Week(int d,int w)
{
/*
for(int i=d-1;i>=1;i--)
{
if(w==0)
{
w=7;
}
w=w-1;
}
if(w==7)
{
return 0;
}
return w;
*/
int want = w + 7 - ((d - 1) % 7);
return want%7;
}

void main()
{
int week;
cout<<"本月 1 号 星期 ";
week=Cal_Week(15,3);
cout<<array[week]<<endl;
}