#include <stdio.h>
 #include <time.h>
        inline float mul(float i1, float i2) 
              {   
                 return i1 * i2;   
               }
            
        inline double div2(double j1, double j2) 
              {   
                 return j1 / j2;     
              }
          
    void main( )
        {  
         time_t t1, t2;             
         double t;
         int k;
         float a, b, c;
         double a1, b1, c1;
         time (&t1);
            for (k=1;k<99999999;k++)
            {
             a=5.555555555;
             b=7.35678765432;
             c=mul(a,b);
             a1=5.555555555;
             b1=7.35678765432;
             c1=div2(a1,b1);
            }
        time(&t2);
          t=difftime(t2, t1);
     printf ("Συνολικός χρόνος εκτέλεσης = %.2f δευτερόλεπτα.\n", t );     
   }