C PROGRAMS : CONTROL STRUCTURES
17.Program to print the fibonacii series till which user wishes
/*
Fibonacii series: Fibonacii series is one in which the nth term is
sum of (n-1)th term and (n-2)th term.
The first two numbers of series are 0 and 1
For example: 0 1 1 2 3 5 8 13 21 and so on
*/
#include<stdio.h>
#include<conio.h> // Linux user - Remove this
int main()
{
/* Declaring variable for n=number, f=first, s=second,
t=third number, i=to iterate the loop */
int n,f,s,t,i;
// Inputing number till where fibonacci series is to be displayed
printf("Enter the number till which you want to see fibonacci series:");
scanf("%d",&n);
// Determining and displaying fibonacii series
printf("Fibonacii Series: ");
f=0;
s=1;
printf("%d %d ",f,s);
for(i=3;i<=n;i++)
{
t=f+s;
printf("%d ",t);
f=s;
s=t;
}
getch(); // Linux user - Remove this
return 0;
}
#include<stdio.h>
#include<conio.h> // Linux user - Remove this
int main()
{
// Declaring variable for c=character
char c;
// Inputing character
printf("Enter any character: ");
scanf("%c",&c);
if(c>=65 && c<=90)
printf("Character is Upper Case Letter");
else if(c>=97 && c<=122)
printf("Character is Lower Case Letter");
else if(c>=48 && c<=57)
printf("Character is a Digit");
else
printf("Character is Special Symbol");
getch(); // Linux user - Remove this
return 0;
}/*
A perfect square is a number that can be expressed as the product of two equal integers.
9
9 is a perfect square becuase it can be expressed as 3 * 3 (product of two equal integers)
16
16 is a perfect square becuase it can be expressed as 4 * 4 (product of two equal integers)
25
25 is a perfect square becuase it can be expressed as 5 * 5 (product of two equal integers)
*/
#include<stdio.h>
#include<conio.h> // Linux user - Remove this
int main()
{
//Declaring variable for n=number
int n;
// Declaring variable for r=remainder, q=uotient, i=to iterate the loop
int r=0,q=0,i,flag=0;
// Inputting Number
printf("Enter any numbre: ");
scanf("%d",&n);
// Determin whether Numbr is Perfect Square or Not
for(i=1;i<=n;i++)
{
r=n%i;
q=n/i;
if(r==0 && i==q)
{
flag=1;
break;
}
}
// Displaying Result
if(flag==1)
printf("Number is Perfect Square");
else
printf("Number is not Perfect Square");
getch(); // Linux user - Remove this
return 0;
}
#include<stdio.h>
#include<conio.h> // Linux user - Remove this
int main()
{
/* Declaring variable for r=remainder, q=uotient, i,
m=to iterate the loops, f1=Another flag variable */
int r=0, q=0, i, flag=0, f1=0, m;
// Delcaring variable for s=start point, e=endpoint
int s,e;
// Inputting start point and end point
printf("Enter from where you want to list perfect Number:");
scanf("%d",&s);
printf("Enter till where you want to list perfect Number:");
scanf("%d",&e);
// Determin Number is Perfect or Not
for(m=s;m<=e;m++)
{
flag=0;
for(i=1;i<=m;i++)
{
r=m%i;
q=m/i;
if(r==0 && i==q)
{
f1=1;
flag=1;
break;
}
}
// Displaying Perfect Square Numbre in the given format
if(flag==1)
printf("%d is a Perfect Square because it can be expressed as: %d * %d \n",m,i,i);
}
/* Checking if any Perfect Square Number exist and if not
then displaying appropriate message */
if(f1==0)
printf("No Perfect Square Number exist");
getch(); // Linux user - Remove this
return 0;
}
A customer maintains a saving account in a bank. The bank provide an interest rate of
simple interest of 4% per annum. Write a program displaying a menu to let the user enter
the coice as follows:
1 : Deposit an amount A
2 : Withdrawl of amount A
3 : Displaying the balance amount
4 : Calculating interest for d days on balance amount
5 : Exit
Fix initial balance amount = 1000
*/
#include<stdio.h>
#include<conio.h> // Linux user - Remove this
int main()
{
// Declaring variable for a=amount, ba=balance amount, si=simple interest
float a, ba=1000, si;
/* Declaring variable for ch=choice, d=day, ans=checks if user
want to enter another query or choice */
int ch, d,ans;
// Displaying choices
printf("Bank Queries:\n");
printf("1 : Deposit an amount\n");
printf("2 : Withdrawl of amount\n");
printf("3 : Displaying the balance amount\n");
printf("4 : Calculating interest for d days on balance amount\n");
printf("5 : exit\n\n");
do
{
// Inputing choices
printf("Enter your query:");
scanf("%d",&ch);
// Performing various bank queries
switch(ch)
{
case 1:
// Inputing deposit amount
printf("Enter amount to be deposited:");
scanf("%f",&a);
ba=ba+a;
break;
case 2:
// Inputing withdrawl amount
printf("Enter withdrawl amount:");
scanf("%f",&a);
ba=ba-a;
break;
case 3:
printf("Balance Amount: %f\n",ba);
break;
case 4:
// Inputing days
printf("Enter Days for which you want to calculate interest:");
scanf("%d",&d);
// Calculating simple interest
si=(a*0.04*d)/100;
printf("Simple interest=%f\n",si);
ba=ba+si;
break;
case 5:
printf("Press any key to exit");
getch();
exit(0);
break;
default:
printf("Wrong Entry");
}
printf("Do you want to enter another query: 1-yes, 2-no : ");
scanf("%d",&ans);
}while(ans==1);
printf("Press any key to exit");
getch(); // Linux user - Remove this
return 0;
}
