Code to Generate random Name (10 character) and Credit Card (16 digits)

Code to Generate random Name (10 character) and Credit Card (16 digits) and Save them to a .csv file along with Last_four digits of credit card

Under Vuser_init.c Add the function random_

vuser_init()
{
    return 0;
}
    char buff[32] = "";
      
random_name(int length) {
  int r,i;
  srand((unsigned int)time(0));  //Seed number for rand()

  r = rand() % 25 + 65; //uppercase for Initial Letter
  buff[0] = (char)r;

  //Loop to generate random small characters
  for (i = 1; i < length; i++) {
    // A-Z = 65-90 && a-z =  97-122
      r = rand() % 26 + 97; //lowercase
    buff[i] = (char)r;
  
  }
  return 0;
}  

 Code which goes into Action()

Action()
{
int i;
char *file1 = "C:\\temp\\sample.csv";
long filename1;
unsigned long num;
char randnum1[10], randnum2[20];
char name[20];
const char *last_four;

srand(time(NULL));

filename1=fopen(file1,"w");

fprintf(filename1,"Name, Credit_Card, Four_digits\n");

for(i=1;i<=2;i++)
{
random_name(10); //Pass the Length required as argument
lr_output_message("Name = %s",buff);
strcat(name,buff);

strcat(randnum1, lr_eval_string("{CC}"));
strcpy (randnum2, randnum1);
strcat(randnum2, lr_eval_string("{CC}"));

lr_output_message("Credit Card Number Generated is: %s", randnum2);

last_four = &randnum2[12];

lr_output_message ("The last 4 digits of Credit Card : %s", last_four);

fprintf(filename1,"%s,%s,%s\n",name,randnum2,last_four);//fprintf is used to enter some text into a file


memset(randnum1, '\0', sizeof(randnum1));
memset(randnum2, '\0', sizeof(randnum2));
memset(name, '\0', sizeof(name));

}

fclose(filename1);//flose is used to close the opened fie
return 0;
}

Output:

Starting action Action.

Action.c(20): Name = Wjaeiatthi

Action.c(27): Credit Card Number Generated is: 4418937762043482

Action.c(31): The last 4 digits of Credit Card : 3482

Action.c(20): Name = Vdvmudugth

Action.c(27): Credit Card Number Generated is: 4016207745512163

Action.c(31): The last 4 digits of Credit Card : 2163

Ending action Action.

Also sample.csv file is generated under c:\temp which has below details:

Name	Credit_Card	Four_digits
Wjaeiatthi	4.41894E+15	3482
Vdvmudugth	4.01621E+15	2163

The Parameter CC is defined as below: