Mortgage Analyzer.c

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#include <stdio.h>
#include <math.h>

int main()
{

double loanAmount = 0;
double interestRate = 0;
double grossIncome = 0;
double monPay = 0;
double monPayEst = 0;
double totalIn = 0;
double totalInEst = 0;
double interestPercent = 0;
double payment = 0;

int loanDuration = 0;
int myPower = 0;

const int ZERO = 0;
const int ONE = 1;
const int TWENTY = 20;
const int THIRTY = 30;

printf("Enter the amount of the loan: " "\n");
    scanf("%.2lf", loanAmount);
        if(loanAmount < ZERO) {
            printf("Loan amount must be greater than $%.2lf" "\n", ZERO);
            scanf("%.2lf", loanAmount);
        } else {
            printf("Enter the length of the loan (in years): " "\n");
                scanf("%d", loanDuration);
                    if(loanDuration <= ONE || loanDuration >= THIRTY) {
                        printf("Loan duration must be between %d year and %d years inclusive ", ONE, THIRTY);
                        scanf("%d", loanDuration);
                    } else {}
        }


printf("Enter your monthly gross income: " "\n"); 
    scanf("%.2lf", grossIncome);
        if(grossIncome < ZERO){
            printf("Monthly income must be greater than $%.2lf ", (double)ZERO);
            scanf("%.2lf", grossIncome);
        } 
        //myPower = pow((loanDuration - loanDuration) - loanDuration));
    payment = (loanAmount * interestRate) / (1 - pow((1 + interestRate), loanDuration));
    totalIn =  (loanDuration * payment) - loanAmount;
    
printf("The monthly payment is: $%.2lf   (~$%.2lf)" "\n", monPay, monPayEst);
printf("The total interest is: $%.2lf  (~$%.2lf)" "\n", totalIn,totalInEst);
printf("The monthly payment is less than or equal to %.1lf%% of your gross monthly income." "\n", interestPercent);
printf("You are definitely approved for the loan!" "\n");


printf("\n"); // Blank Line
    return 0;
}