main()                                                      
   {                                                           
       float y = 98.7654;                                      
       printf("%7.4f\n", y);                                   
       printf("%f\n", y);                                      
       printf("%7.2f\n", y);                                   
       printf("%-7.2f\n", y);                                  
       printf("%07.2f\n", y);                                  
       printf("%*.*f", 7, 2, y);                               
       printf("\n");                                           
       printf("%10.2e\n", y);                                  
       printf("%12.4e\n", -y);                                 
       printf("%-10.2e\n", y);                                 
       printf("%e\n", y);                                      
   }                                                           
Output      98.7654                                                     
           98.765404                                                   
             98.77                                                     
           98.77                                                       
           0098.77                                                     
           98.77                                                     
           9.88e+001                                                  
           -9.8765e+001                                                
           9.88e+001                                                 
           9.876540e+001