Math log, log10, sin, round, trunc, ceil, floor functions

#include<stdio.h>
#include<math.h>
#include<conio.h>
//Math  log, log10, sin, round, trunc, ceil, floor  functions
int main()
{
   double x,y,result;
   printf("Enter the value of x: \n");
   scanf("%lf",&x);
   printf("Enter the value of Y: \n");
   scanf("%lf",&y);


   result=log(x);//log function  computes the natural logarithm of an argument
   printf("log (%.0lf)=%.1lf\n",x,result);

    result=log10(x);//log10 function   computes the base 10 logarithm of an argument.
   printf("log10(%.0lf)=%.1lf\n",x,result);

    result=sin(x);//sin function returns the sine of a number.
   printf("sin(%.0lf)=%.1lf\n",x,result);


    result=round(y);/*round function  returns the nearest integer value of the
     float/double/long double argument passed to this function */
   printf("round of %lf=%.1lf\n",y,result);

   result=trunc(y);/*trunc functions  are used to remove digits after
    decimal point and return the modified decimal number. */
   printf("trunc of %lf=%.1lf\n",y,result);

   result=ceil(y);//ceil function computes the nearest integer greater than the argument passed.
   printf("ceil of %lf=%.1lf \n",y,result);

   result=floor(y);//floor  calculates the nearest integer less than the argument passed.
   printf("floor of %lf=%.1lf\n",y,result);


    return 0;
}