/* Justin Clouse
* SS# XXX-XX-XXXX
*
* Assignment #8
* This program helps manage a checking account by calculating the balance
* and service charges when a transaction takes place.
*
* Algorithm
* 1. Display program's purpose / Declare variables
* 2. Open input/output files
* 3. Read initial balance
* 3.1 Printf("Initial Balance: %.2f", balance);
* --- Function DataChecking ---
* 4. If transaction code does not equal 0, 1, or 2, print error message
* 5. If amount is negative, print error message
* --- Function Transaction ---
* 6. If transaction code equals 1
* 6.1 Transaction is a check. Amount should be subtracted (sign = '-')
* 6.2 Printf("Transaction: Check in amount of %.2f\n", trans_amt);
* 6.3 Balance -= trans_amt;
* 6.4 Printf("Current Balance: $%.2f\n", balance);
* 7. If transaction code equals 2
* 7.1 Transaction is a deposit. Amount should be added (sign = '+')
* 7.2 Printf("Transaction: Deposit in amount of $%.2f\n", trans_amt);
* 7.3 Balance += trans_amt;
* 7.4 Printf("Current Balance: $%.2f\n", balance);
* 8. If transaction code equals 0
* 8.1 End of month
* 8.2 Printf("Transaction: End\n");
* 8.3 Printf("Current Balance: $%.2f\n", balance);
* --- Function BalanceManipulation ---
* 9. Perform balance manipulation
* 9.1 Balance = balance (+ or -) trans_amt
* 9.2 Printf("Current Balance: $%.2f\n", balance);
* --- Function ServiceCharge ---
* 10. If trans_code = 1
* 10.1 Add $0.15 to serv_charge
* 10.2 Printf("Service Charge: Check --- Charge $0.15\n");
* 10.3 If balance is less than $500
* 10.3.1 Add 1 to lessthan500
* 10.3.2 If lessthan500 equals 1
* 10.3.2.1 Add $5 to serv_charge
* 10.3.2.2 Printf("Service Charge: Below $500 --- Charge ");
* 10.3.2.3 Printf("$5.00\n");
* 11. If trans_code = 2
* 11.1 Add $0.10 to serv_charge
* 11.2 Printf("Service Charge: Deposit --- Charge $0.10\n");
* 12. If balance is less than $50
* 12.1 Printf("Warning: Your balance is below $50.00\n");
* 12.3.3 If balance is less than $0 and sign = '-'
* 12.3.4 Add $10 to serv_charge
* 12.3.5 Printf("Service Charge: Negative Balance --- $10.00\n");
* 13. Printf("Total Service Charge: %.2f\n\n", serv_charge);
* ------
* 14. Close data files
* 15. End
*/
#include <stdio.h>
/* Displays program purpose */
void instruct(FILE *outp)
{
fprintf(outp, "\n\nThis program helps manage a checking account \n");
fprintf(outp, "by calculating the balance and service charges \n");
fprintf(outp, "when a transaction takes place. \n\n");
}
/* Function To Check Data Validity */
int datacheck(int trans_code, float trans_amt, FILE *outp){
if (trans_code != 0 && trans_code != 1 && trans_code != 2){
fprintf(outp, "Your file contains an invalid transaction code.\n");
return(1);
} else if (trans_amt < 0){
fprintf(outp, "Your file contains negative numbers which\n");
fprintf(outp, "are not allowed.\n");
return(1);
} else return(0);
}
/* Function To Determine Transaction */
void transaction(int trans_code, float trans_amt, float *balance,
FILE *outp){
if (trans_code = 1){
fprintf(outp, "Transaction: Check in amount of %.2f\n", trans_amt);
*balance -= trans_amt;
}
if (trans_code = 2){
fprintf(outp, "Transaction: Deposit in amount of $%.2f\n",
trans_amt);
*balance += trans_amt;
}
if (trans_code = 0){
fprintf(outp, "Transaction: End\n");
}
}
/* Function To Calculate Service Charge */
void servicecharge(int trans_code, float *balance, float serv_charge,
int *lessthan500, FILE *outp){
if (trans_code = 1){
serv_charge += .15;
fprintf(outp, "Service Charge: Check --- Charge $0.15\n");
if (*balance < 500){
*lessthan500 += 1;
if (*lessthan500 = 1){
serv_charge += 5;
fprintf(outp, "Service Charge: Below $500 --- Charge ");
fprintf(outp, "$5.00\n");
}
}
}
if (trans_code = 2){
serv_charge += .10;
fprintf(outp, "Service Charge: Deposit --- Charge $0.10\n");
}
if (*balance < 50){
fprintf(outp, "Warning: Your balance is below $50.00\n");
if (trans_code = 1){
serv_charge += 10;
fprintf(outp, "Service Charge: Negative Balance --- $10.00\n");
}
}
fprintf(outp, "Total Service Charge: %.2f\n\n", serv_charge);
}
/* Main Function */
void main(void)
{
/* Declare variables */
int trans_code, lessthan500 = 0, all_clear;
float balance, trans_amt, serv_charge;
/* Pointer to input file */
FILE *inp, *outp;
/* Open input file */
inp = fopen("account.dat", "r");
outp = fopen("transactions.dat", "w");
/* Call function to display program's purpose */
instruct(outp);
/* Initial balance */
fscanf(inp, "%lf", &balance);
fprintf(outp, "Initial Balance: %.2f", balance);
/* Get Input And Output Data */
while (fscanf(inp,"%lf", &trans_code) &&
fscanf(inp,"%lf", &trans_amt) != EOF){
fscanf(inp, "%lf", &trans_code);
fscanf(inp, "%lf", &trans_amt);
all_clear = datacheck(trans_code, trans_amt, outp);
if (all_clear != 1){
transaction(trans_code, trans_amt, &balance, outp);
servicecharge(trans_code, &balance, serv_charge,
&lessthan500, outp);
fprintf(outp, "Final Balance: %.2f", balance);
}
}
fclose(inp);
fclose(outp);
}
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