Area Of Triangle Using Math Function in C

///area of triangle = Root of (s(s-a)(s-b)(s-c))
//  s = (a+b+c)/2
#include <stdio.h>
float area(float a, float b, float c);

int main()
{
    float a,b,c,z;
    printf("\n Enter the Values of a,b &c ;");
    scanf("%f%f%f",&a,&b,&c);
    z=area(a,b,c); //Function Calling
    printf("\n Area OF Triangle :%.3f",z);
 
    return 0;
}
float area(float a, float b, float c)
{
    float s,m,x;
    s=(a+b+c)/2;
    m=s*(s-a)*(s-b)*(s-c);
    x=sqrt(m);
    return(x);
}