THMMY.gr

#include <stdio.h>

double kybos(float); 
double ginomeno(float,float,float);

int
main() {
float x,y,z;
double fu;

printf("Δώσε το x το y το z\n");
scanf("%f%f%f",&x,&y,&z);
fu=kybos(x)+ginomeno(x,y,z);
printf("To αποτελεσμα της f(x) είναι : %f\n",fu );

return 0;
}

double kybos(float x){
	double t;
	t=x*x*x;
	return t;
}

double ginomeno(float x, float y, float z){
	double t;
	t=x*y*z;
	return t;
}

double kybos(float x){
   double t;
   t=x*x*x;
   return t;
}

double kybos(float x){
  return x*x*x;
}

#include <stdio.h>
#include <time.h>
#define REP 1000000

double kybos1(float);
double ginomeno1(float,float,float);
double kybos2(float);
double ginomeno2(float,float,float);

int main() {
clock_t begin1, end1,begin2, end2;
double time_spent1,time_spent2;
float x,y,z;
double fu;
int i;
begin1 = clock();
for(i=0;i<REP;i++){
    x=y=z=i;
    printf("To αποτελεσμα της f(x) είναι : %f\n",kybos1(x)+ginomeno1(x,y,z) );
}
end1 = clock();
time_spent1 = (double)(end1 - begin1) / CLOCKS_PER_SEC;
begin2 = clock();
for(i=0;i<REP;i++){
    x=y=z=i;
    fu=kybos2(x)+ginomeno2(x,y,z);
    printf("To αποτελεσμα της f(x) είναι : %f\n",fu );
}
end2 = clock();
time_spent2 = (double)(end2 - begin2) / CLOCKS_PER_SEC;
printf("Time 1 = %lf\nTime 2 = %lf",time_spent1,time_spent2);
return 0;
}
double kybos1(float x){
	return x*x*x;
}
double ginomeno1(float x, float y, float z){
	return x*y*z;
}
double kybos2(float x){
	double t;
	t=x*x*x;
	return t;
}
double ginomeno2(float x, float y, float z){
	double t;
	t=x*y*z;
	return t;
}

Time 1 = 165.24
Time 2 = 164.69

Time 1 = 160.23
Time 2 = 160.26

gcc -03

Time 1 = 0.282369
Time 2 = 0.282341

gcc -00

Time 1 = 2.374460
Time 2 = 2.612350