To Be Familiarize With Control Structures In C ( Only Selective Structure )
- WAP to input an integer number and check whether it is even or odd. if even then display its square and cube but display only its cube if it is odd.
- WAP to enter an integer number and test whether it is exactly divisible by 3 but not by 5. Display other message like " It is not required number " if not divisible by any and "It is divisible by both " if divisible by both
- WAP to to input an age of a person and check whether a person is child , teenager or young.
- WAP to find all the roots of a quadratic equation.
- WAP to find profit or loss and their percentage when the cost price and selling price is entered through the keyboard.
- WAP to enter a character and check whether it is uppercase or lowercase.
- WAP to check the whether the 3 digit number you entered is palindrome or not.
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1.) Queston 1
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,s,c;
clrscr ();
printf ("Enter a number\n");
scanf ("%d",&a);
s=a*a;
c=s*a;
if (a%2==0)
{
printf ("Even:\nIt's square is %d\nIt's cube is %d\n",s,c);
}
else
{
printf ("Odd:\nIt's cube is %d\n",c);
}
getch ();
}
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2.) Queston 2
#include <stdio.h>
#include <conio.h>
void main()
{
int a,x,y;
clrscr ();
printf ("Enter a number\n");
scanf ("%d",&a);
x=a%3;
y=a%5;
//if (x!=0)
// printf ("It is not required number");
if (x==0&&y!=0)
{printf ("It is divisibe by 3\n");}
else if (x==0&&y==0)
{printf ("It is divisible by both\n");}
else
printf ("It is not required number\n");
getch ();
}
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3.) Queston 3
#include <stdio.h>
#include <conio.h>
void main ()
{
int a;
clrscr ();
printf ("Enter an age\n");
scanf ("%d",&a);
if (a>=0&&a<=10)
printf ("He/she is Child\n");
if (a>=11&&a<=19)
printf ("He/she is teenager\n");
if (a>=20&&a<=40)
printf ("He/she is young");
getch ();
}
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4.) Queston 4
#include <stdio.h>
#include <conio.h>
#include <math.h>
void main ()
{
float a, b, c, R1, R2;
float disc, real, imag;
clrscr ();
printf ("Enter value a,b & c for ax^2+bx+c\n");
scanf ("%f %f %f",&a,&b,&c);
disc=b*b-4.0*a*c;
real=-b/(2.0*a);
imag=sqrt(abs(disc))/(2.0*a);
if (a==0||b==0||c==0)
{
printf ("Roots cannot be determined\n");
}
else
{
if (disc < 0)
{
printf ("Roots are imaginary\n");
printf ("The Root1 is %f +i%f\n",real,imag);
printf ("The Root2 is %f -i%f\n",real,imag);
}
else if (disc==0)
{
printf ("Roots are real and equal\n");
R1=real;
R2=R1;
printf ("The Root1 is %f\nThe Root2 is %f\n",R1,R2);
}
else if (disc > 0)
{
printf ("Roots are real and distinct\n");
R1=real+imag;
R2=real-imag;
printf ("The Root1 is %f\nThe Root 2 is %f\n",R1,R2);
}
}
getch ();
}
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5.) Queston 5
#include <stdio.h>
#include <conio.h>
//#include <math.h>
void main ()
{
int cp, sp, p,l; /*cp=costprice sp=sellprice p=profit l=loss*/
float pp, lp; /*pp=profit % and lp= loss % which can come in fraction*/
clrscr ();
printf ("Enter Cost price and Selling price\n");
scanf ("%d%d",&cp,&sp);
p=sp-cp; /* ch to check the which is greater sp or cp*/
if (p>=1)
{
// printf ("Profit is Rs.%d\n",p);
pp=((p*100.0)/cp);
printf ("Profit is Rs.%d\nProfit percentage is %f %\n",p,pp);
}
else
{
l=cp-sp;
//printf ("The loss is Rs.%d\n",l);
lp=((l*100.0)/cp);
printf ("Loss is Rs.%d\nLoss percentage is %f %\n",l,lp);
}
getch ();
}
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6.) Queston 6
#include <stdio.h>
#include <conio.h>
void main()
{
char cs;
clrscr ();
printf ("Enter a letter\n");
scanf ("%c",&cs);
if (cs>='a'&&cs<='z')
{
printf ("It is lowercase\n");
}
else
printf ("It is uppercase\n");
getch ();
}
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7.) Queston 7
#include <stdio.h>
#include <conio.h>
void main ()
{
int a,x,t,z;
clrscr ();
printf ("Enter three digit number\n");
scanf ("%d",&a);
x=a/100;
t=a%100;
z=t%10;
if (x==z)
printf ("It is palindrome\n");
else
printf ("It is not palindrome\n");
getch ();
}
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