#include<stdio.h>

main()
{
	int balance, amount, deposit, withdraw, fastcash, rate, years, pin;
	char choice, A, B, C, D, E, F;
	pin = 0;
	balance = 598;

	while (pin != 123456)
	{
		system("cls");
		printf("\n\n Welcome to the Bank of Sirach\n _________________________________\n\n");
		if (pin != 123456 && pin != 0){ printf(" Wrong Pin!\n\n Enter your correct pin to continue: "); }else if(pin == 0){ 
		printf(" <Your card has been recognized>\n\n Enter your pin to continue: "); }
		scanf("%d", &pin);
		system("cls");
	}

	do{
		system("cls");
		printf("\n\n Bank of Sirach\n");
		printf(" _________________________________\n\n");
		printf(" A. Deposit\n");
		printf(" B. Withdrawal\n");
		printf(" C. Balance Inquiry\n");
		printf(" D. Fast Cash\n");
		printf(" E. Exit\n");
		printf(" _________________________________\n\n");
		printf(" Please select your transaction: ");
		
		scanf(" %c",&choice); choice = toupper(choice);
		
		if ( choice != 'A' && choice != 'B' && choice != 'C' && choice != 'D' && choice != 'E') printf("Invalid Choice!\n");
	
		switch(choice){
			
			case 'A':  system("cls"); // DEPOSIT
			do{
				printf("\n\n You are making a Deposit\n _________________________________\n\n");
				printf(" Enter amount to deposit: ");
				scanf("%d",&deposit);
				
				if( deposit > 0 ){
					printf("\n Amount Deposited P%d" ,deposit);
					balance = balance + deposit;
					printf("\n Balance is now P%d \n" ,balance);
					printf("\n Press any key to continue... ");
					getch();
				}
			}while(deposit <= 0);
			break;
		
		
			case 'B': system("cls"); // WITHDRAWAL
			do{
				
				do{
					printf("\n\n You are making a Withdrawal\n _________________________________\n\n");
					if(withdraw % 100 != 0){printf(" Invalid amount!\n\n");}
					printf(" Enter amount to Withdraw: ");
					scanf("%d",&withdraw);
					system("cls");
				}while(withdraw % 100 != 0);
				
				if((balance - withdraw) < 0){
					system("cls");
					printf("\n\n You are making a Withdrawal\n _________________________________\n\n");
					printf(" Insufficient amount!\n");
					printf("\n Press any key to continue... ");
					getch(); 				
				}else{
					system("cls");
					printf("\n\n You are making a Withdrawal\n _________________________________\n\n");
					printf(" Withdrawal amount: P%d" ,withdraw);
					balance = balance - withdraw;
					printf("\n Balance is now P%d \n" ,balance);
					printf("\n Press any key to continue... ");
					getch(); 
				}
			}while(balance < 0);
			break;
		
		
			case 'C': system("cls"); // BALANCE INQUIRY
			printf("\n\n You are making a Balance Inquiry\n _________________________________\n\n");
			printf(" Balance is: P%d \n" ,balance);
			printf("\n Press any key to continue... ");
			getch();
			system("cls");
			break;
		
		
			case 'D': system("cls"); // FASTCASH
			do{
				do{
					system("cls");
					printf("\n\n Fastcash\n _________________________________\n\n");
					printf(" 1. P100\n");
					printf(" 2. P200\n");
					printf(" 3. P500\n");
					printf(" 4. P1000\n");
					printf("\n Enter Choice: ");
					scanf("%d",&fastcash);
				}while(fastcash <= 0 || fastcash >=5);
				
				if(fastcash == 1){fastcash = 100; }else if(fastcash == 2){fastcash = 200;}else if(fastcash == 3){ fastcash = 500;}else if(fastcash == 4){ fastcash = 1000;}
				
				if((balance - fastcash) < 0){
					printf("\n\n Insufficient amount!\n Available balance is P%d \n\n Press any key to continue... ", balance);
					getch();
					system("cls");
				}else{
					balance = balance - fastcash;
					printf("\n Dispensed fastcash of P%d \n Balance is now P%d \n" ,fastcash,balance);
					printf("\n Press any key to continue... ");
					getch();
					system("cls");
				}
			}while(balance < 0);
			break;
		
		}
	}while(choice != 'E');
	system("cls");
	printf("\n\n Please take your card.\n Thank you for banking with The Bank of Sirach!\n\n");
}

 

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About C

C language is one of the most popular general-purpose programming language developed by Dennis Ritchie at Bell laboratories for UNIX operating system. The initial release of C Language was in the year 1972. Most of the desktop operating systems are written in C Language.

Key features:

  • Structured Programming
  • Popular system programming language
  • UNIX, MySQL and Oracle are completely written in C.
  • Supports variety of platforms
  • Efficient and also handle low-level activities.
  • As fast as assembly language and hence used as system development language.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition if-else is used.

if(conditional-expression) {
   // code
} else {
   // code
}

You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to if-else-if ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
} 

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  // code  
} 

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {  
 // code 
}  

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition); 

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

One dimentional Array:

data-type array-name[size];

Two dimensional array:

data-type array-name[size][size];

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.

Two types of functions are present in C

  1. Library Functions:

Library functions are the in-built functions which are declared in header files like printf(),scanf(),puts(),gets() etc.,

  1. User defined functions:

User defined functions are the ones which are written by the programmer based on the requirement.

How to declare a Function

return_type function_name(parameters);

How to call a Function

function_name (parameters)

How to define a Function

return_type function_name(parameters) {  
  //code
}