diff --git a/C++/.dat b/C++/.dat
new file mode 100644
index 000000000..a817b71d9
Binary files /dev/null and b/C++/.dat differ
diff --git a/C++/17thMarch-prabhat.cpp b/C++/17thMarch-prabhat.cpp
new file mode 100644
index 000000000..748824a87
--- /dev/null
+++ b/C++/17thMarch-prabhat.cpp
@@ -0,0 +1,92 @@
+#include <stdio.h>
+#include <conio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <windows.h>
+
+struct user
+{
+    char phone[50];
+    char ac[50];
+    char password[50];
+    float balance;
+};
+int main()
+
+{
+    system("cls");
+    system("color 3");
+    struct user usr;
+    FILE *fp;
+    char filename[50], phone[50], pword[50];
+    char cont = 'y';
+    int opt, choice;
+
+    printf("=====BANKING AUTHENTICATION SYSTEM====");
+    printf("\n\nWhat do you want to do?\n");
+    printf("\n1.Register an account ");
+    printf("\n2.Login to account\n");
+    printf("\nYour choice:\t");
+
+    scanf("%d", &opt);
+    if (opt == 1)
+    {
+
+        printf("Enter your account no:\t");
+        scanf("%s", usr.ac);
+        printf("Enter your phone no:\t");
+        scanf("%s", usr.phone);
+        printf("Enter your password:\t");
+        scanf("%s", usr.password);
+        usr.balance = 0;
+        strcpy(filename, usr.phone);
+        fp = fopen(strcpy(filename, ".dat"), "w");
+        fwrite(&usr, sizeof(struct user), 1, fp);
+        if (fwrite != 0)
+        {
+            printf("\n Account is successfully created");
+        }
+        else
+        {
+            printf("\n Something went wrong please try again later");
+        }
+        fclose(fp);
+    }
+    if (opt == 2)
+    {
+        printf("\nPhone Number:\t");
+        scanf("%s", phone);
+        printf("Password:\t");
+        scanf("%s", pword);
+        strcpy(filename, phone);
+        fp = fopen(strcat(filename, ".dat"), "r");
+        if (fp = NULL)
+        {
+            printf("\n Account is not registered.");
+        }
+        else
+        {
+            fread(&usr, sizeof(struct user), 1, fp);
+            fclose(fp);
+            if (!strcmp(pword, usr.password))
+            {
+                while (cont == 'y')
+                {
+                    printf("\nPress 1 for balance inquiry");
+                    printf("\nPress 1 for depositing cash");
+                    printf("\nPress 1 for online transfer");
+                    printf("\nPress 1 for password change");
+
+                    printf("\n Do you want to continue the transaction('Y/N')");
+                    scanf("%s", &cont);
+                }
+            }
+            else
+            {
+                printf("\nInvalid password");
+            }
+        }
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/C++/17thMarch-prabhat.exe b/C++/17thMarch-prabhat.exe
new file mode 100644
index 000000000..40b1dcb85
Binary files /dev/null and b/C++/17thMarch-prabhat.exe differ