Loan Details also added

bank management system.c

@@ -1,6 +1,8 @@
 #include<stdio.h>
 #include<stdlib.h>
 #include<windows.h>
+#include <math.h>
+
 int i,j;
 int main_exit;
 void menu();
@@ -21,7 +23,7 @@ struct {
     struct date deposit;
     struct date withdraw;
 
-    }add,upd,check,rem,transaction;
+    }add,upd,temp,check,rem,transaction;
 
 float interest(float t,float amount,int rate)
 {
@@ -485,14 +487,108 @@ void see(void)
             }
 
 }
+// Function to calculate the Equated Monthly Installment (EMI)
+float calculate_emi(float loan_amount, float interest_rate, int tenure_years) {
+    float monthly_rate = interest_rate / (12 * 100); // Convert annual rate to monthly rate
+    int total_months = tenure_years * 12;            // Convert tenure to months
+
+    return (loan_amount * monthly_rate * pow(1 + monthly_rate, total_months)) / 
+           (pow(1 + monthly_rate, total_months) - 1);
+}
+
+// Function to apply for a loan
+void apply_loan() {
+    int loan_choice, tenure_years;
+    float loan_amount, emi, interest_rate;
+    char confirm;
+
+    system("cls");
+    printf("\t\t\t\xB2\xB2\xB2 APPLY FOR LOAN  \xB2\xB2\xB2\n\n");
+
+    printf("Select loan type:\n");
+    printf("1. Personal Loan (10%% annual interest)\n");
+    printf("2. Home Loan (6%% annual interest)\n");
+    printf("3. Education Loan (4%% annual interest)\n");
+    printf("Enter your choice (1-3): ");
+    scanf("%d", &loan_choice);
+
+    if (loan_choice < 1 || loan_choice > 3) {
+        printf("Invalid loan choice! Returning to main menu.\n");
+        fordelay(1000000000); // Optional delay to give the user time to read the message
+        menu(); // Call the menu function to return to the main menu
+        return;
+    }
+
+    printf("Enter the loan amount: $");
+    scanf("%f", &loan_amount);
+
+    if (loan_amount <= 0) {
+        printf("Invalid loan amount! Returning to main menu.\n");
+        return;
+    }
+
+    printf("Enter the loan tenure (in years): ");
+    scanf("%d", &tenure_years);
+
+    if (tenure_years <= 0) {
+        printf("Invalid loan tenure! Returning to main menu.\n");
+        return;
+    }
+
+    // Determine the interest rate based on loan choice
+    switch (loan_choice) {
+        case 1:
+            interest_rate = 10.0; // Personal Loan
+            printf("\nYou have selected Personal Loan with 10%% annual interest.\n");
+            break;
+        case 2:
+            interest_rate = 6.0; // Home Loan
+            printf("\nYou have selected Home Loan with 6%% annual interest.\n");
+            break;
+        case 3:
+            interest_rate = 4.0; // Education Loan
+            printf("\nYou have selected Education Loan with 4%% annual interest.\n");
+            break;
+        default:
+            printf("Enter ");
+    }
 
+    // Calculate the EMI
+    emi = calculate_emi(loan_amount, interest_rate, tenure_years);
+
+    // Display loan summary
+    printf("\nLoan Summary:\n");
+    printf("Loan Amount: $%.2f\n", loan_amount);
+    printf("Interest Rate: %.2f%% per annum\n", interest_rate);
+    printf("Tenure: %d years\n", tenure_years);
+    printf("Equated Monthly Installment (EMI): $%.2f\n", emi);
+    printf("Total Repayment Amount (including interest): $%.2f\n", emi * tenure_years * 12);
+
+    // Confirm loan application
+    printf("\nDo you want to proceed with the loan application? (Y/N): ");
+    getchar(); // To consume any leftover newline character from previous inputs
+    scanf("%c", &confirm);
+
+    if (confirm == 'Y' || confirm == 'y') {
+        printf("\nLoan application submitted successfully!\n");
+        printf("Your monthly EMI will be $%.2f for %d months.\n", emi, tenure_years * 12);
+    } else {
+        printf("\nLoan application canceled.\n");
+    }
+
+    // Wait for user input before returning to the main menu
+    printf("\nPress enter to return to the main menu...\n");
+    getchar();
+    getchar();
+    menu();
+}
 void menu(void){
     int choice;
     system("cls");
     system("color 9");
     printf("\n\n\t\t\tCUSTOMER ACCOUNT BANKING MANAGEMENT SYSTEM");
     printf("\n\n\n\t\t\t\xB2\xB2\xB2\xB2\xB2\xB2\xB2 WELCOME TO THE MAIN MENU \xB2\xB2\xB2\xB2\xB2\xB2\xB2");
-    printf("\n\n\t\t1.Create new account\n\t\t2.Update information of existing account\n\t\t3.For transactions\n\t\t4.Check the details of existing account\n\t\t5.Removing existing account\n\t\t6.View customer's list\n\t\t7.Transfer funds\n\t\t8.Exit\n\n\n\n\n\t\t Enter your choice:");
+    printf("\n\n\t\t1.Create new account\n\t\t2.Update information of existing account\n\t\t3.For transactions\n\t\t4.Check the details of existing account\n\t\t5.Removing existing account\n\t\t6.View customer's list\n\t\t7.Transfer funds\n\t\t8.Apply for loan\n\t\t9.Exit\n\n\n\n\n\t\t Enter your choice:");
     scanf("%d", &choice);
 
     system("cls");
@@ -518,7 +614,56 @@ void menu(void){
         case 7:
             transfer(); 
         break;
-        case 8:
+        case 8: {
+    FILE *ptr;
+    int account_found = 0;  // Flag to check if account exists
+
+    ptr = fopen("record.dat", "r");
+    if (ptr == NULL) {
+        printf("Error opening file!\n");
+        Sleep(3000);
+        menu();  // Return to menu if file cannot be opened
+        break;
+    }
+
+    printf("Enter Account No.: ");
+    scanf("%d", &check.acc_no);
+
+    // Loop through the file to find the matching account number
+    while (fscanf(ptr, "%d %s %d/%d/%d %d %s %s %lf %s %f %d/%d/%d\n", 
+            &add.acc_no, add.name, &add.dob.month, &add.dob.day, &add.dob.year, 
+            &add.age, add.address, add.citizenship, &add.phone, add.acc_type, 
+            &add.amt, &add.deposit.month, &add.deposit.day, &add.deposit.year) != EOF) {
+
+        if (add.acc_no == check.acc_no) {
+            // Account number found
+            account_found = 1;
+            printf("Account found!\n");
+
+            // Get phone number and DOB from the user
+            printf("Enter phone: ");
+            scanf("%lf", &add.phone);  // Use %lf for double
+            printf("Enter Date Of Birth (MM/DD/YYYY): ");
+            scanf("%d/%d/%d", &add.dob.month, &add.dob.day, &add.dob.year);
+
+            // Call apply_loan() function after collecting details
+            apply_loan();
+
+            break;  // Exit the loop after finding the account
+        }
+    }
+
+    if (!account_found) {
+        printf("Account no. does not exist.\n");
+        Sleep(3000);  // Delay for 3 seconds
+        menu();       // Return to the main menu
+    }
+
+    fclose(ptr); // Close the file after processing
+    break;
+}
+
+        case 9:
             exit(0); 
         break;
     }   
@@ -643,7 +788,7 @@ int main()
                     {printf("\nInvalid!");
                     fordelay(1000000000);
                     system("cls");
-                    goto login_try;}
+                    }
 
         }
         return 0;

record.dat

@@ -0,0 +1,4 @@
+423 42 4234/0/0 234 234 2234 234.000000 1 234.000000 23423/0/0
+213 sal 1/1/2005 234 hk hj 234.000000 bjhb 234.000000 23423/0/0
+123 sal 1/1/20204 12 123 12 123.000000 1 123.000000 23423/0/0
+9087 mia 12/12/2002 20 xyz 123 456.000000 1 30000.000000 23423/0/0