Exercise 1

Write a C Program to calculate the area of triangle using the formula

area = ( s (s-a) (s-b)(s-c))1/2 where s= (a+b+c)/2

SOURCE CODE:

/*Program to Find Area of Triangle.*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

 float a,b,c,s,area;

 clrscr();

 printf("Enter size of sides of triangle::");

 scanf("%f%f%f",&a,&b,&c);

 s=(a+b+c)/2.0;

 area=sqrt(s*(s-a)*(s-b)*(s-c));

 printf("\nThe area of triangle is %.2f",area);

}

OUTPUT:

Write a C program to find the largest of three numbers using ternary operator.

SOURCE CODE:

/*Program to Find Largest Among Three Numbers Using Ternary Operator.*/

#include<stdio.h>

#include<conio.h>

void main()

{

 int a,b,c,largest;

 clrscr();

 printf("Enter three numbers:");

 scanf("%d%d%d",&a,&b,&c);

 largest=((a>b)&&(a>c))?a:(((b>a)&&(b>c))?b:c);

 printf("\nLargest among three numbers is %d",largest);

}

OUTPUT:

Write a C Program to swap two numbers without using a temporary variable.

SOURCE CODE:

/*Program to Swap Two Numbers without using Temporary Variable.*/

#include<stdio.h>

#include<conio.h>

void main()

{

 int a,b;

 clrscr();

 printf("Enter two numbers:");

 scanf("%d%d",&a,&b);

 printf("\nBefore Swapping::\na=%d\tb=%d",a,b);

 a=a+b;

 b=a-b;

 a=a-b;

 printf("\nAfter Swapping::\na=%d\tb=%d",a,b);

}

OUTPUT: