使用时间过滤器，我收到以下错误：'}' - 并非所有控制路径都返回一个值

Question

I get the error: '}' - not all control paths return a value. I am using:

 int StartHour = 8;
 int EndHour = 20;

And this is the code I am using:

bool TimeFilter()
    {
    EndHour1=EndHour+GMTOffset;
    StartHour1=StartHour+GMTOffset;
    if ((StartHour+GMTOffset)<0)  {StartHour1=StartHour+GMTOffset+24;} 
    if ((EndHour+GMTOffset)<0)    {EndHour1=EndHour+GMTOffset+24;}     
    if ((StartHour+GMTOffset)>24) {StartHour1=StartHour+GMTOffset-24;} 
    if ((EndHour+GMTOffset)>24)   {EndHour1=EndHour+GMTOffset-24;}    
    

if (Use_TimeFilter==false) {comment1=""; return (true);}
      else 

if (StartHour1<EndHour1)
       {
         if (Hour()>=StartHour1 && Hour()<EndHour1)
         {
         comment1=""; 
         return (true);
         } 
         
         comment1="WARNING: Trading diluar Time Filter, No Open Position\n"; 
         return (false);
       }
 
     else
     
if (StartHour1>EndHour1)

       {
         if (Hour()>=StartHour1 || Hour()<EndHour1)
         {
         comment1=""; 
         return (true);
         } 
         comment1="WARNING: Trading diluar Time Filter, No Open Position\n"; 
         return (false);
       }

}

What is wrong and how to fix this so i don't receive this error anymore. Thanks in advance

Answer 1

You are using multiple nested if else statements and there exists a possible scenario which would result in all the if statements not being fulfilled (ie Use_TimeFilter=True and StartHour1==EndHour1 ). You therefore need to simply add a final return(false) statement in your code.

bool TimeFilter()
{
   EndHour1=EndHour+GMTOffset;
   StartHour1=StartHour+GMTOffset;
   if((StartHour+GMTOffset)<0)  {StartHour1=StartHour+GMTOffset+24;} 
   if((EndHour+GMTOffset)<0)    {EndHour1=EndHour+GMTOffset+24;}     
   if((StartHour+GMTOffset)>24) {StartHour1=StartHour+GMTOffset-24;} 
   if((EndHour+GMTOffset)>24)   {EndHour1=EndHour+GMTOffset-24;}    

   if(!Use_TimeFilter) {comment1=""; return (true);}
   else if(StartHour1<EndHour1)
   {
      if(Hour()>=StartHour1 && Hour()<EndHour1)
      {
         comment1=""; 
      return(true);
      }
      comment1="WARNING: Trading diluar Time Filter, No Open Position\n"; 
   return(false);
   }
   else if(StartHour1>EndHour1)
   {
      if (Hour()>=StartHour1 || Hour()<EndHour1)
      {
         comment1=""; 
      return (true);
      } 
      comment1="WARNING: Trading diluar Time Filter, No Open Position\n"; 
   return (false);
   }
return(false);
}