Program to Solve Quadratic Equation Using Conditional operator and Switch in C.

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/* Program to Solve Quadratic Equation Using Conditional operator and Switch */

/* In quadratic equation we need values of a,b,c
and D=(b square -4.a.c)
and every thing depends on the value of D
*If D grater than 0 multiple and real root
*If D==0 only single root
*If D is less than 0 than imaginary roots

*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int a,b,c,D,n;

float x1,x2,D1;

clrscr();

printf("\nEnter Values");
printf("\n a = ");
scanf("%d",&a);

printf("\n b = ");
scanf("%d",&b);

printf("\n c = ");
scanf("%d",&c);

printf("\nEnterd Values are : a=%d b=%d c=%d",a,b,c);

printf("\nQuadratic Equation Calculation:");

D=(b*b)-(4*a*c);

printf("\nValue of Normal D= %d ",D);
D1=abs(D);
D1=sqrt(D1);

printf("\nValue of Squared D= %.3f ",D1);


n=(D>=0)?(D==0?2:1):3;

printf("\nValue of n : %d",n);

switch(n)
{
case 1:

//Multiple Roots
printf("\nReal & Multiple Roots");

x1=((b+D1)/(2*a));

x2=((b-D1)/(2*a));

printf("\n\nRoots are X1=%.3f X2=%.3f ",x1,x2);

break;

case 2:

//Single Root
printf("\nReal & Single Roots");

x1=((b)/(2*a));

printf("\n\nRoots are X1=%.3f",x1);


break;

case 3:

//Imaginary Part

printf("\nImaginary Roots");

printf("\nX1=(%d+%.3fi)/2*%d",b,D1,a);

printf("\nX2=(%d-%.3fi)/2*%d",b,D1,a);


break;

default:

printf("\nWrong Entry, Error!!!");
}

getch();
}

Program to convert temperature Fahrenheit to Celsius in C.

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/* Program to convert temperature Fahrenheit to Celsius in C */

#include<conio.h>
#include<stdio.h>
void main()
{
float c,f;
clrscr();

printf("\n\tTEMPERATURE CONVERTER \n\t[Fahrenheit to Celsius]");

printf("\n\tEnter temperature in F:");

scanf("%f",&f);

c=((f-32)*5)/9;

printf("\n\tF= %f equals to C= %f",f,c);

getch();
}

Program to convert temperature Celsius to Fahrenheit in C.

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/*Program to convert temperature Celsius to Fahrenheit in C */

#include<conio.h>
#include<stdio.h>
void main()
{
float c,f;
clrscr();

printf("\n\tTEMPERATURE CONVERTER \n\t[Celsius to Fahrenheit]");
printf("\n\tEnter temperature in C:");
scanf("%f",&c);

f=((c*9)/5)+32;

printf("\n\tC= %f equals to F= %f",c,f);

getch();
}

Program to calculate sum of series using for loop in C.

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/*Program to calculate sum of series

 1/(1square)+1/(2 square)+1/(3 square)+.......+1/(n square).
 by power function.

 where n is the value entered by user
*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int i,n;
float sum;
clrscr();
sum=0;

printf("\nEnter limit number : ");
scanf("%d",&n);


printf("\nSeries=");

printf("\n---------------------\n");

for(i=1;i<=n;i++)
{

printf(" +1/(%d*%d) ",i,i);
sum=sum+pow(i,-2); //power function

}

printf("\n---------------------\n");

printf("\nSum of series= %.3f",sum);

getch();
}

Program to calculate sum of series using for loop in C.

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/*Program to calculate sum of series

 1/1+1/2+1/3+.......+1/n.
 by power function.

 where n is the value entered by user
*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int i,n;
float sum;
clrscr();
sum=0;

printf("\nEnter limit number : ");
scanf("%d",&n);


printf("\nSeries=");

printf("\n---------------------\n");

for(i=1;i<=n;i++)
{

printf(" +1/%d ",i);
sum=sum+pow(i,-1); //power function

}

printf("\n---------------------\n");

printf("\nSum of series= %.3f",sum);

getch();
}

Program to enter hours and print numbers of days and remaining hours and convert remaining hours into minutes in C.

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/*Program to enter hours and print numbers of days and remaining hours and convert remaining hours into minutes */

#include<stdio.h>
#include<conio.h>
void main()
{

float hours,rhours,min;
/*hours for hours enter by User and rhours for remaining hours */

int days,h;
/*For numbers of Day */

clrscr();

printf("\n\tHours to Day Converter");
printf("\n\tEnter Hours :");
scanf("%f",&hours);

h=hours;

printf("\n\tHours:%d",h);
min=hours-h;
printf("\n\tRemaining Hours:%.2f",min);

min=(min*60);
printf("\n\tMinutes:%.2f",min);


rhours=h%24;

/*Modulus operator provide us the remainder after Division which is remaining hours */

days=(int)hours/24;
/*Division operator to calculate Days as we know 24 hours means 1 Day */

printf("\n\tNumber of Days : %d",days);
printf("\n\tRemaining Hours: %f",rhours);

getch();
}