#include <math.h>                                           
                                                               
   main()                                                      
   {                                                           
       int count, negative;                                    
       double number, sqroot;                                      
                                                                   
       printf("Enter 9999 to STOP\n");                             
       count = 0 ;                                             
       negative = 0 ;                                          
                                                                   
       while (count < = 100)                                        
       {                                                           
           printf("Enter a number : ");                        
           scanf("%lf", &number);                              
           if (number == 9999)                                 
              break;     /* EXIT FROM THE LOOP */
if (number < 0)                                         
           {                                                       
              printf("Number is negative\n\n");                      
              negative++ ;                                     
              continue;  /* SKIP REST OF THE LOOP */
               
           }                                                       
           sqroot = sqrt(number);                                  
           printf("Number      = %lf\n Square root = %lf\n\n",  
                                 number, sqroot);                  
           count++ ;                                           
       }                                                       
       printf("Number of items done = %d\n", count);                                                                          
       printf("\n\nNegative items       = %d\n", negative);                  
       printf("END OF DATA\n");                                    
   }    
                                                           
                                                                     
   




Output                                                      
                                                               
   Enter 9999 to STOP                                          
   Enter a number : 25.0                                       
   Number      = 25.000000                                     
   Square root = 5.000000                                      
                                                               
   Enter a number : 40.5                                       
   Number      = 40.500000                                     
   Square root = 6.363961                                      
                                                               
   Enter a number : -9                                         
   Number is negative                                          
                                                               
   Enter a number : 16                                         
   Number      = 16.000000                                     
   Square root = 4.000000                                      
                                                               
   Enter a number : -14.75                                     
   Number is negative                                          
                                                               
   Enter a number : 80                                         
   Number      = 80.000000                                     
   Square root = 8.944272                                      
                                                               
   Enter a number : 9999                                       
   Number of items done = 4                                    
   Negative items       = 2                                    
   END OF DATA