求助cpp(126) : warning C4715: 'getMonthValue' : not all control paths return a val
程序代码：问题在最后
//函数功能：根据输入的日期来判断输出的日期是星期几。
#include<iostream>
bool isLeapYear(int year);
int getCenturyValue(int year);
int getYearVlaue(int year);
int getMonthValue(int month, int year);
void getInput( int m_m, int m_d, int m_y);
int main()
{
using namespace std;
int m_month=0,m_day=0,m_year=0,r_sum,r_r;
getInput(m_month,m_day,m_year);
r_sum=m_day+getMonthValue(m_month,m_year)
+getYearVlaue(m_year)+getCenturyValue(m_year);
r_r=r_sum%7;
switch(r_r)
{
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;
}
return 0;
}
//判断是否为闰年
bool isLeapYear(int year)
{
if( (year%400==0)||( (year%4==0)&&(year%100!=0) ) )
return true;
else
return false;
}
//获取年份头两位
int getCenturyValue(int year)
{
int q2_year,num;
q2_year=year/100;
num=(3-(q2_year%4))*2;
return num;
}
int getYearVlaue(int year)
{
int r_year;
r_year=(year%100)/4+(year%100);
return r_year;
}
//按月份返回值
int getMonthValue(int month, int year)
{
if(month==1)
{
if( isLeapYear(year) )
{
return 6;
}
else
return 0;
}
if(month==2)
{
if( isLeapYear(year) )
{
return 2;
}
else
return 3;
}
if(month==3)
{
return 3;
}
if(month==4)
{
return 6;
}
if(month==5)
{
return 1;
}
if(month==6)
{
return 4;
}
if(month==7)
{
return 6;
}
if(month==8)
{
return 2;
}
if(month==9)
{
return 5;
}
if(month==10)
{
return 0;
}
if(month==11)
{
return 3;
}
if(month==12)
{
return 5;
}
}
void getInput( int m_m, int m_d, int m_y)
{
using namespace std;
cout<<"Please input month(number)"<<" "<<"days(number)"
<<","<<" "<<"years"<<endl;
cout<<"For instance:7 4,2008"<<endl;
cin>>m_m>>m_d>>m_y;
}
G:\应用程序\判断星期\判断.cpp(126) : warning C4715: 'getMonthValue' : not all control paths return a value
谢谢[ 本帖最后由 朱稳 于 2012-3-12 09:28 编辑 ]
