Write a c program to find out the square root of number

/* square root of number */
#include <stdio.h>
#include <conio.h>
#include <math.h>
void main()
{
float a,b;
clrscr();
printf("enter base\t\t\t"); /*here \t\t\t is for tab purpose only*/
scanf("%f",&a);
b=sqrt(a);
printf("root of given number is \t %f",b); /*here \t\t\t is for tab purpose only*/
getch();
}