Simple Integer ADD program error Result is always zero

For all my CUDA programs i am getting the result as zero. I tested with simple integer as shown below. Can any one please see whats going wrong ?

#include <stdio.h>
#include <cuda.h>
#include <conio.h>

// Kernel that executes on the CUDA device

global void add(int a,int b,int* c)

// main routine that executes on the host

int main(void)
int c;
int* c_d;
size_t size = sizeof(int);
cudaMalloc((void **) &c_d, size);
//cudaMemcpy(c_d, c, size,cudaMemcpyHostToDevice);

cudaMemcpy(&c, c_d, size,cudaMemcpyDeviceToHost);  




Many thanks
Sheshank Kodam

you code works on my machine.

I think that you should check error code and
make sure that your kernel is executed.

hey chein

My kernel is not executed for some reason. I will check that and will get back.


Sheshank Kodam