Friends pls Help me to Solve this prototype ErrorHow to face this PROTYPE ERROR

[suvarna raju]

#include<stdio. h>
#include<conio. h>
#include<math.h >
void main()
{
double val,result;
printf("Enter value : ");
scanf("%f",&val );
result=asinh(va l);
printf("Result = %f",result);
getch();
}


This Program when compiled and runned giving error
asinh should hava protoype error


how to Solve this... Pls Suggest me Ans friends

[weaknessforcats]

The code compiles OK using Visual Studio 2013.

The only message I get is about getch() which is a deprecated function.

BTW: main() should return int rather than void.