For loop with a two-dimensional array

Hey!

I'm working on a program that will calculate prices for coins. I'm using a two-dimensional array to save the year, and the condition of the coin.

Here are the basics.

Code:

j = 0;
k = 0;

coinCount = 2; // previously prompted

for (i = 0; i < coinCount; i++)
    {
printf("\nYear: ");
        coin[j][k] = check(a); //A function that validates the input
        k++;

printf("\nCondition: ");
        coin[j][k] = check(a);
        j++;
    }

    j = 0;
    k = 0;

    // For every coin, check if condition is 1.

 for (i = 0; i < coinCount; i++)
    {
 if (coin[j][1] == 1)
        {
            mint = mint + (3 * coin[j][0]); // THIS doesn't work.
            j++;
        }
    }

I'm trying to make it print the variable 'mint', but it only stores the values from one loop. Am I doing something terribly wrong?

Is a two-dimensional array the way you would approach this?
Is there a way to make "object-like" things in C?
Like Coin1.year and Coin1.condition?

Thank you and sorry for my bad language :)

First, use "paste as text" when you paste code, then it looks like this

Code:

  j = 0;
  k = 0;

  coinCount = 2;                // previously prompted

  for (i = 0; i < coinCount; i++) {
    printf("\nYear: ");
    coin[j][k] = check(a);      //A function that validates the input
    k++;

    printf("\nCondition: ");
    coin[j][k] = check(a);
    j++;
  }

  j = 0;
  k = 0;

  // For every coin, check if condition is 1.

  for (i = 0; i < coinCount; i++) {
    if (coin[j][1] == 1) {
      mint = mint + (3 * coin[j][0]); // THIS doesn't work.
      j++;
    }
  }

Next, look at your loop variables.

Code:

  for (i = 0; i < coinCount; i++) {
    if (coin[j][1] == 1) {
      mint = mint + (3 * coin[j][0]); // THIS doesn't work.
      j++;
    }
  }

You don't need j at all.

In fact, in all the code, you may as well stick with coin[i][0] and coin[i][1]

Originally Posted by slimd

Is there a way to make "object-like" things in C?
Like Coin1.year and Coin1.condition?

That is a struct in C. Example

Code:

typedef struct {
  int year;
  char condition[100];
} COIN;

Code:

COIN Coin1;
Coin1.year = 1920;
strcpy(Coin1.condition, "really bad");