C program-2

1 ./* Write a C program to find the area of a triangle, given three sides*/

#include
#include

main()
{
int s, a, b, c, area;
clrscr();

printf("Enter the values of a,b and c\n");
scanf ("%d %d %d", &a, &b, &c);

/* compute s*/

s = (a + b + c) / 2;

area = sqrt ( s * (s-a) * (s-b) * (s-c));

printf ("Area of a triangale = %d\n", area);
}
/*-----------------------------
Output

Enter the values of a,b and c
3
4
5
Area of a triangale = 6
------------------------------*/


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2. /* Write a C program to find the area of a circl, given the adius*/

#include
#include
#define PI 3.142

main()
{
float radius, area;
clrscr();

printf("Enter the radius of a circle\n");
scanf ("%f", &radius);

area = PI * pow (radius,2);

printf ("Area of a circle = %5.2f\n", area);
}
/*-----------------------------
Output

RUN1
Enter the radius of a circle
3.2
Area of a circle = 32.17

RUN 2
Enter the radius of a circle
6
Area of a circle = 113.11

------------------------------*/


************************************************************************


3. /* Write a C program to find the simple interest , given principle, *
* rate of interest and times*/

#include

main()
{

float p, r, si;
int t;

clrscr();

printf("Enter the values of p,r and t\n");
scanf ("%f %f %d", &p, &r, &t);

si = (p * r * t)/ 100.0;
printf ("Amount = Rs. %5.2f\n", p);
printf ("Rate = Rs. %5.2f%\n", r);
printf ("Time = %d years\n", t);
printf ("Simple interest = %5.2f\n", si);
}
/*-----------------------------
Output
Enter the values of p,r and t
2000
8
3
Amount = Rs. 2000.00
Rate = Rs. 8.00%
Time = 3 years
Simple interest = 480.00

------------------------------*/

*****************************************************************


4. /* Write a C program to check whether a given integer is odd or even*/

#include

main()
{
int ival, remainder;
clrscr();

printf("Enter an integer :");
scanf ("%d", &ival);

remainder = ival % 2;

if (remainder == 0)
printf ("%d, is an even integer\n", ival);
else
printf ("%d, is an odd integer\n", ival);

}
/*-----------------------------
Output

RUN1

Enter an integer :13
13, is an odd integer

RUN2
Enter an integer :24
24, is an even integer

---------------------------------*/

******************************************************************************


5. /* Write a C program to check whether a given integer *
* number is positive or negative*/

#include

main()
{
int number;
clrscr();

printf("Enter a number\n");
scanf ("%d", &number);

if (number > 0)
printf ("%d, is a positive number\n", number);
else
printf ("%d, is a negative number\n", number);

}
/*-----------------------------
Output
Enter a number
-5
-5, is a negative number

RUN2
Enter a number
89
89, is a positive number
------------------------------*/

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