Execution Time Calculator in C

//Execution Time Calculator in C

#include<stdio.h>

#include<conio.h>

#include<time.h>

void main()

{

clock_t begin, end;

double time_spent;

int x,y,sum;

begin = clock();

clrscr();

printf("Enter 2 numbers\n");

scanf("%d%d",&x,&y);

sum=x+y;

printf("Sum=%d",sum);

end = clock();

time_spent = (double)(end - begin) / CLOCKS_PER_SEC;

printf("\n\nTime Spent=%lf",time_spent);

getch();

}