Actually I Have Given My Code Below But I Am Not Able To Get The Expected Output Can Anyone Tell Where I Wen Wrong?

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C++

C

//z[kl]=kld_conv[round((kl-1)*1/pgfactor)+1];
I have already an kld_conv[] ,which consist of values of size 999
sample_length=80000
I want to put the value of kld_conv respected index to z_round.

double *z;
z=(double*)malloc(sample_length* sizeof(double));
double *z_round;
z_round=(double*)malloc(sample_length* sizeof(double));

for(kl=0;kl<sample_length;kl++)
{
z[kl]=(float)((kl-1)*(1/pgfactor));
int index=round(z[kl])+1;
z_round[kl]=kld_conv[index];
//printf("%f\t ",z_round[0][kl]);
} 
//printf("\n\n");

but the value of z_round is giving all 0 which it should not be.