HW#4 Receipt

#include <stdio.h>

int prize(int specialPrizeNumbers[3], int firstPrizeNumbers[3], int myNumber) {
	int n[3] = {0, 0, 0}; //Number of digits same as the number in every set of firstPrizeNumber in reverse order 
	int i;
	int dollar = 0; //The prize for this iteration
	int temp[8];  //Argument of a function, if it's an array, unlike a variable, it will change its value because 
		      //it's linked to the address of the array itsel.
	for(i=0; i<8; i++){
		temp[i] = firstPrizeNumbers[i]; 
	//To avoid the aforemetioned situation, create a temporary array for the firstPrizeNumber array, and temp array
	//will be updated every time function prize is called
	}
	for(i = 0; i < 3; i++){
		if(myNumber == specialPrizeNumbers[i]){
			dollar += 2000000; //If you got jackpot
		}
	}
	for(i = 0; i < 3; i++){
		while(myNumber % 10 == temp[i] % 10 && myNumber != 0){ //Checking if last digits are the same and if reached
								       //the end
			n[i]++;
			myNumber /= 10; //Next number in reverse order
			temp[i] /= 10;
		}
	}
	for(i = 0; i < 3; i++){ //Calculate dollar
		switch(n[i]){
			case 1: case 2:
			break;
			
			case 3:
			dollar += 200;
			break;
			
			case 4:
			dollar += 1000;
			break;
			
			case 5:
			dollar += 4000;
			break;
			
			case 6:
			dollar += 10000;
			break;
			
			case 7:
			dollar += 40000;
			break;
			
			case 8:
			dollar += 200000;
			break;
			
			default:
			break;
		}
	}
	return dollar;
}

int main() {
  int i;
  int specialPrizeNumbers[3];
  int firstPrizeNumbers[3];
  int myNumber;
  int totalPrize = 0;

  for (i = 0; i < 3; i++)
    scanf("%d", &(specialPrizeNumbers[i]));
  for (i = 0; i < 3; i++)
    scanf("%d", &(firstPrizeNumbers[i]));

  while (scanf("%d", &myNumber) != EOF)
    totalPrize += prize(specialPrizeNumbers, firstPrizeNumbers, myNumber);

  printf("%d\n", totalPrize);
  return 0;
}