C Beginner Arrays

#include <stdio.h> //for input and output functions
#include <stdlib.h> //rand() function
#define N 100 //making the value tweakable so that the programm will terminate after N=100 vehicles

int main(){

   int i=0; //vehicle counter variable
   int vehicles=0, cars=0, bikes=0, trucks=0; //counter variables for each type and all together
   int card=0, cash=0, both=0; //counter variables for each payment type
   int card_b=0, cash_b=0, both_b=0; // counter for payment type if Bike
   int card_c=0, cash_c=0, both_c=0; // if Car
   int card_t=0, cash_t=0, both_t=0; //  if Truck

   int plate; //plate of current vehicle
   int plates[N]; //plate array of all vehicles

   int fee; //fee the current Vehicle has to pay
   int balance_bef[N], balance_aft[N]; //array for balance before and after payment of fee

   int total, total_cars, total_bikes, total_trucks; //total payment for all together and each type at it's own
   int total_card=0, total_cash=0; //total payment for each payment type
   int fees[N], cash_p[N], card_p[N]; //array of fees, payment with cash and payment with card for each vehicle
   int r; //random number for generating random type

   char type; //we get the value randomly with 'r'
   char types[N]; //type array of all vehicles
   char p_types[N]; //payment type array of all vehicles

   float avg; //floating point number for the average

   srand(time(NULL)); //rand() function seed set to current time, so that each time runned the program gives other values
   
  while(i<N){ //run until i equals N, so for N vehicles
       //plate will be random number between 10000...90000
       plate = 10000 + rand()%(90000 - 10000 + 1);  //random_value = start + rand()%(end - start +1)
       plates[i] = plate; //save the current plate to the array

       //balance will be random between 0...10
       balance_bef[i] = rand()%11;

       //random type and find it's fee
       r  = 1 + rand()%3; //value will be 1, 2 or 3
      if(r == 1){
          type = 'b'; //bike
          bikes++;
          fee = 3;
      }
      else if(r == 2){
           type = 'c'; //car
           cars++;
           fee = 5;
      }
      else{ //if 3
          type = 't'; //truck
          trucks++;
          fee = 10;
      }
      types[i] = type; //saving type to array
      fees[i] = fee; //fee to array
      vehicles++;

      //payment
      if ( balance_bef[i] >= fee){ //pay with card
          balance_aft[i] =  balance_bef[i] - fee; //new balance
          cash_p[i] = 0; //nothing paid in cash
          card_p[i] = fee; //fee paid with card
          card++; //counter for card payment goes 1 up
          total_card += fee; //total payment from card goes up by fee
          p_types[i] = 'c'; //card payment type
   }

   else if( balance_bef[i] == 0){ //pay with cash
       balance_aft[i] = 0; //balance remains 0
       cash_p[i] = fee; //fee paid with cash
       card_p[i] = 0; //nothing paid with card
       cash++; //cash counter goes 1 up
       total_cash += fee; //total payment from cash goes up by fee
       p_types[i] = 'm'; //cash payment type (money)
   }

   else{ //pay with both
       balance_aft[i] = 0; //new balance is 0
       cash_p[i] = fee -  balance_bef[i];
       card_p[i] = balance_bef[i];
       both++; //counter for both goes up by 1
       total_cash += cash_p[i] ; //total payment from cash goes up by cash paid
       total_card += balance_bef[i]; //total payment from card goes up by balance
       p_types[i] = 'b'; //both payment type (cash and card)
  }        

  i++; //counter goes up by one to go to the next vehicle
}
//Print Table with Information about all Vehicles
//I use \t to tab space them
printf("Plate\tType\tBalance bef.\tFee\tBalance aft/\tCash\tCard\tPayment Type\n\n");
for(i = 0; i < N; i++){

    printf("%d\t",plates[i]);
    if(types[i]=='b') printf("Bike\t");
    else if(types[i]=='c') printf("Car\t");
    else if(types[i]=='t') printf("Truck\t");
    printf("%d\t%d\t%d\t%d\t%dt", balance_bef[i], fees[i],balance_aft[i], cash_p[i], card_p[i]);
    if(p_types[i]=='c') printf("Card Only\n");
    else if(p_types[i]=='m') printf("Cash Only\n");
    else if(p_types[i]=='b') printf("Card and Cash\n");

}

//Statistics

printf("A total of %d Vehicles passed by\n", vehicles); //print how many passed by
printf("Cars: %d, Bikes %d, Trucks %d\n", cars, bikes, trucks);
//calculating for each type
total_bikes = bikes * 3;
total_cars = cars * 5;
total_trucks = trucks * 10;
//total is the sum of the above
total = total_bikes + total_cars + total_trucks; 
avg = (float) total / vehicles; //typecasting to convert the integers to floats and get the right answer

printf("We earned %d in total\n", total);
printf("From Cars: %d, Bikes: %d, Trucks: %d\n", total_cars, total_bikes, total_trucks);
printf("Average is %.2f\n", avg); //we use %.2f to have only 2 floating point precision

//Card and Cash stuff

printf("%d paid with Cash, %d with Card and %d with Both\n", cash, card, both);
printf("We earned %d from Cash and %d from Card\n", total_cash, total_card);

//Separated for each vehicletype and payment type

for(i = 0; i < N; i++){ 
    if(types[i]=='b'){  
        if(p_types[i]=='c') card_b++;
        else if(p_types[i]=='m') cash_b++;
        else if(p_types[i]=='b') both_b++;  
     }
    else if(types[i]=='c'){
        if(p_types[i]=='c') card_c++;
        else if(p_types[i]=='m') cash_c++;
        else if(p_types[i]=='b') both_c++;      
    }
    else if(types[i]=='t'){
        if(p_types[i]=='c') card_t++;
        else if(p_types[i]=='m') cash_t++;
        else if(p_types[i]=='b')    both_t++;       
    }
}   

printf("Payment Type Counters:\n");
printf("Bikes:\nCard Only: %d,Cash Only: %d,Card and Cash: %d\n", card_b, cash_b, both_b);
printf("Cars:\nCard Only: %d,Cash Only: %d,Card and Cash: %d\n", card_c, cash_c, both_c);
printf("Trucks:\nCard Only: %d,Cash Only: %d,Card and Cash: %d\n", card_t, cash_t, both_t);
printf("All Together:\nCard Only: %d,Cash Only: %d,Card and Cash: %d\n", card, cash, both);
}