Thread: Help! Program To Find The Least amount of coins with a twist

I can't seem to figure out how to get this program to work with a trick coin of a $1.31 to work

Code:

#include <stdio.h>

int main()
{
    /* Declaring variables */
    
    float moneyfloat,coins[7]; 
      /* Money Value From User, Values For Each Type Of Coin */
    
    int x,y,numCoins[7];
      /* Counter, Counter, Number Of Each Type Of Coin Counters */
    
    int sum = 0;
      /* Sum Counter that is set to a value of 0 */
      
      
    /* Set Values For Each Type Of Coin */
          
    coins[1] = 2.00; /* $2.00 */
    coins[2] = 1.31; /* $1.31 */
    coins[3] = 1.00; /* $1.00 */
    coins[4] = 0.25; /* $0.25 */
    coins[5] = 0.10; /* $0.10 */
    coins[6] = 0.05; /* $0.05 */
    coins[7] = 0.01; /* $0.01 */
    
    
    /* Set Counters For Each Type Of Coin */
    
    for (x = 1; x <= 7; x++)
    {
        numCoins[x] = 0;
    }
      /* $2.00, $1.31, $1.00, $0.25, $0.10, $0.05, $0.01 */
      
      
    /* Print Title */
    
    printf ("\nSmallest Combination of Coins Finder\n\n");
    
    
    /* Ask User For Input */
    
    printf ("Enter An Amount of Money: $");
    
    
    /* Get User Input */
    
    scanf ("%f", &moneyfloat); /* Gets Users Input Of Amount of Money */
    
    
    /* New Line */
    
    printf ("\n");
    
    
    /* Sequence To Calculate The Amount Of Coins Needed From The Value Entered */
    
    for (y = 1; y <= 7; y++)
    {
        if (moneyfloat >= coins[y]) 
          /* Money Is More Than Or Equal To Coin Value */
        {
                       numCoins[y] = (int) (moneyfloat / coins[y]);
                         /* Finds number Of Coins */
                       
                       moneyfloat = moneyfloat - (numCoins[y] * coins[y]);
                         /* Takes The Value For The Type of Coins from the Money */
                         
                       
                       sum = sum + numCoins[y];
                         /* Adds amount of coins to sum */
        }    
        printf ("$%f coin:  %d - $%f \n",coins[y], numCoins[y],(numCoins[y] * coins[y]));                 
          /* Prints Type Of Coin, How Many, and Value */
    }
    
    
    /* Print Sum */
    
    printf ("-----------------------------\n");
    printf ("SUM: %d\n",sum);
    
    
    /* Close Program (Repeat Twice Because Once Dosn't Work Correctly) */
      
    getchar();
    getchar();
    return 0;
}

Please Help!

New code

Code:

#include <stdio.h>

int main()
{
    /* Declaring variables */
    
    float moneyfloat,coins[7]; 
      /* Money Value From User, Values For Each Type Of Coin */
    
    int x,y,numCoins[7];
      /* Counter, Counter, Number Of Each Type Of Coin Counters */
    
    int sum = 0;
      /* Sum Counter that is set to a value of 0 */
      
      
    /* Set Values For Each Type Of Coin */
          
    coins[0] = 2.00; /* $2.00 */
    coins[1] = 1.31; /* $1.31 */
    coins[2] = 1.00; /* $1.00 */
    coins[3] = 0.25; /* $0.25 */
    coins[4] = 0.10; /* $0.10 */
    coins[5] = 0.05; /* $0.05 */
    coins[6] = 0.01; /* $0.01 */
    
    
    /* Set Counters For Each Type Of Coin */
    
    for (x = 0; x <= 6; x++)
    {
        numCoins[x] = 0;
    }
      /* $2.00, $1.31, $1.00, $0.25, $0.10, $0.05, $0.01 */
      
      
    /* Print Title */
    
    printf ("\nSmallest Combination of Coins Finder\n\n");
    
    
    /* Ask User For Input */
    
    printf ("Enter An Amount of Money: $");
    
    
    /* Get User Input */
    
    scanf ("%f", &moneyfloat); /* Gets Users Input Of Amount of Money */
    
    
    /* New Line */
    
    printf ("\n");
    
    
    /* Sequence To Calculate The Amount Of Coins Needed From The Value Entered */
    
    for (y = 0; y <= 6; y++)
    {
        if (moneyfloat >= coins[y]) 
          /* Money Is More Than Or Equal To Coin Value */
        {
                       numCoins[y] = (int) (moneyfloat / coins[y]);
                         /* Finds number Of Coins */
                       
                       moneyfloat = moneyfloat - (numCoins[y] * coins[y]);
                         /* Takes The Value For The Type of Coins from the Money */
                         
                       
                       sum = sum + numCoins[y];
                         /* Adds amount of coins to sum */
        }    
        printf ("$%f coin:  %d - $%f \n",coins[y], numCoins[y],(numCoins[y] * coins[y]));                 
          /* Prints Type Of Coin, How Many, and Value */
    }
    
    
    /* Print Sum */
    
    printf ("-----------------------------\n");
    printf ("SUM: %d\n",sum);
    
    
    /* Close Program (Repeat Twice Because Once Dosn't Work Correctly) */
      
    getchar();
    getchar();
    return 0;
}