Unit 1 ocs752 introduction to c programming

OCS752 INTRODUCTION TO C PROGRAMMING
UNIT 1 EXERCISE PROGRAMS
1. Check whether the required amount can be withdrawn based on the available amount
#include <stdio.h>
unsigned long amount=1000, deposit, withdraw;
int choice, pin, k;
char transaction ='y';
void main()
{
while (pin != 1520)
{
printf("ENTER YOUR SECRET PIN NUMBER:");
scanf("%d", &pin);
if (pin != 1520)
printf("PLEASE ENTER VALID PASSWORDn");
}
do
{
printf("********Welcome to ATM Service**************n");
printf("1. Check Balancen");
printf("2. Withdraw Cashn");
printf("3. Deposit Cashn");
printf("4. Quitn");
printf("********************************************nn");
printf("Enter your choice: ");
scanf("%d", &choice);
switch (choice)
{
case 1:
printf("n YOUR BALANCE IN Rs : %lu ", amount);
break;
case 2:
printf("n ENTER THE AMOUNT TO WITHDRAW: ");
scanf("%lu", &withdraw);
if (withdraw % 100 != 0)
{
printf("n PLEASE ENTER THE AMOUNT IN MULTIPLES OF 100");
}
else if (withdraw >(amount - 500))
{
printf("n INSUFFICENT BALANCE");
}
else
{
amount = amount - withdraw;
printf("nn PLEASE COLLECT CASH");
printf("n YOUR CURRENT BALANCE IS%lu", amount);
}
break;

case 3:
printf("n ENTER THE AMOUNT TO DEPOSIT");
scanf("%lu", &deposit);
amount = amount + deposit;
printf("YOUR BALANCE IS %lu", amount);
break;
case 4:
printf("n THANK U USING ATM");
break;
default:
printf("n INVALID CHOICE");
}
printf("nnn DO U WISH TO HAVE ANOTHER TRANSCATION?(y/n): n");
fflush(stdin);./*fflush() is typically used for output stream only. Its purpose is to clear
(or flush) the output buffer and move the buffered data to console*/
scanf("%c", &transaction);
if (transaction == 'n'|| transaction == 'N')
k = 1;
} while (!k);
printf("nn THANKS FOR USING OUT ATM SERVICE");
}
2. Menu-driven program to find the area of different shapes
#include <stdio.h>
void main ()
{
int choice,r,l,w,b,h;
float area;
printf("Input 1 for area of circlen");
printf("Input 2 for area of rectanglen");
printf("Input 3 for area of trianglen");
printf("Input your choice : ");
scanf("%d",&choice);

switch(choice)
{
case 1:
printf("Input radious of the circle : ");
scanf("%d",&r);
area=3.14*r*r;
break;
case 2:
printf("Input length and width of the rectangle : ");
scanf("%d%d",&l,&w);
area=l*w;
break;
case 3:
printf("Input the base and hight of the triangle :");
scanf("%d%d",&b,&h);
area=.5*b*h;
break;
}
printf("The area is : %fn",area);
}
Copy
Sample Output:
Input 1 for area of circle
Input 2 for area of rectangle
Input 3 for area of triangle
Input your choice : 1
Input radious of the circle : 5
The area is : 78.500000
3. Find the sum of even numbers
#include <stdio.h>
int main()
{
int i, n, sum=0;
/* Input upper limit from user */
printf("Enter upper limit: ");
scanf("%d", &n);
for(i=2; i<=n; i+=2)
{
/* Add current even number to sum */
sum += i;
}
printf("Sum of all even number between 1 to %d = %d", n, sum);
return 0;
}

Unit 1 ocs752 introduction to c programming

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Unit 1 ocs752 introduction to c programming