/* Function declaration */
void printline (void);
voidvalue (void);
   main()                                                      
   {                                                           
       printline();                                            
       value();                                                
       printline();                                            
   }                                                           
   /*       Function1: printline( )       */
void printline(void)   /* contains no arguments */
                   
   {                                                           
       int i ;                                                 
                                                               
       for(i=1; i <= 35; i++)                                  
          printf("%c",'-');                                    
       printf("\n");                                        
   }                                                           
   /*       Function2: value( )           */
voidvalue(void)       /* contains no arguments */
                   
   {                                                           
       int    year, period;                                    
       float  inrate, sum, principal;                          
                                                               
       printf("Principal amount?");                            
       scanf("%f", &principal);                                
       printf("Interest rate?   ");                            
       scanf("%f", &inrate);                                   
       printf("Period?          ");                            
       scanf("%d", &period);                                   
                                                               
       sum = principal;                                        
       year = 1;                                               
       while(year <= period)                                   
       {                                                       
           sum = sum *(1+inrate);                              
           year = year +1;                                     
       }                                                       
       printf("\n%8.2f %5.2f %5d %12.2f\n",                    
               principal,inrate,period,sum);                   
   }
                                                           
                                                               


Output   
    -----------------------------------                                                                              
   Principal amount?    5000                                       
   Interest rate?       0.12                                       
   Period?              5                                          
                                                               
   5000.00  0.12        5      8811.71