Application not responding,apphanging

[colbra]

Hi everybody im new here not new to C++ just catching up on it, Im writing alarm program, the program works and does the job, but hangs in the process heres the piece of the code causing the problem

bool SetTime(int hour,int min)
{ 
  loop:
   time_t s=time(0);  
   tm t=*localtime(&s); 
   
   if( hour != t.tm_hour)
    {
         
          goto loop; 
           }
    if( min != t.tm_min)
    {
          
          goto loop; 
           }
           exit(0);
            
  
     }