Here is my code:

/**************************************************************************************************************/
int a,i,j,cardcount=0;
int cardprefix,forlength,temp;
int cardtype,arraysize;
int arrayB[16],sum=0,multiple;
char creditcardNum[64];
char tmp[16];
strcpy(creditcardNum,”");

// End of Variable Declaration

j=0;
do
{

switch(j)
{
case 0: arraysize = 16;
cardtype = 1;
forlength = 14;
//lr_output_message (“The for lenght is: %d”,forlength);
break;
case 1: arraysize = 16;
cardtype = 2;
forlength = 15;
//lr_output_message (“The for lenght is: %d”,forlength);
break;
case 2: arraysize = 15;
cardtype = 3;
forlength = 13;
//lr_output_message (“The for lenght is: %d”,forlength);
break;
case 3: arraysize = 14;
cardtype = 4;
forlength = 12;
//lr_output_message (“The for lenght is: %d”,forlength);
break;
};

do
{
do
{
for(i=0;i<forlength;i++)
{
a= rand()%10;
arrayB[i] = a;
}
if(cardtype==1)
{
arrayB[14] = rand()%5 + 1;
arrayB[15] = 5;
}
if(cardtype==2)
{
arrayB[15] = 4;
}
if(cardtype==3)
{
if(rand()%2==0)
{
arrayB[13] = 4;
}
else
{
arrayB[13]=7;
}
arrayB[14] = 3;
arrayB[15]=0;
}

if(cardtype==4)
{
arrayB[11] = rand()%6;
arrayB[12] = 0;
arrayB[13] = 3;
arrayB[14]=0;
arrayB[15]=0;
}

for(i=0;i9)
{
temp=temp-9;
}
}
else
{
temp=arrayB[i];
}
sum = sum + temp;

}
if(sum%10==0)
{
cardcount++;
//lr_output_message(“The random number accepted is: %lu”,creditcardNum);

//lr_output_message (“The number is accepted”);
strcpy(creditcardNum,”");
for(i=15;i>=0;i–)
{
itoa(arrayB[i],tmp,10);
strcat(creditcardNum,tmp);
}
lr_output_message (“%s”,creditcardNum);

sum=0;
}
else
{
//lr_output_message (“The number is not accepted”);
sum=0;
}
}while(sum%10!=0); //internal do while
}while(cardcount <15); //second do while
cardcount =0;
j++;

}while(j<4);//last loop
/**************************************************************************************************************************/

Please let me know if you need any further details in this regard.

Thanks and Regards,
Ramanjaneyulu Narra.

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