To calculate the sum. Sum=1-x2/2!+ x4/4!- x6/6!+ x8/8!- x10/10!

Algorithm: main program:

Step 1: start

Step 2: declare x,i,n,s=0,c

Step 3: read x value

Step 4: for i=0 , n=0; i<=10; i=i+2, n++ goto step 5

Step 5: s=s+(pow(-1,n)*pow(x,i)/fact(i))

Step 6: print s value

Step 7: stop

 Sub program:

Step 1: while x!=0 goto Step 2

Step 2: y=y+x; x—

Step 3: return y

Step 4: return to main program

 

Program:

 #include<stdio.h>

#include<math.h>

long fact(int);

void main()

 {

            int x,i,n;

              float s=0,c;

             clrscr();

             printf("\n enter the value of x\t");

            scanf("%d",&x);

/*perform the looping operation*/

              for(i=0,n=0;i<=10;i=i+2,n++)

            s=s+(pow(-1,n)*pow(x,i)/fact(i));

             printf("\n the result is %f",s);

             getch();

 }

/* calling sub program*/

long fact(int x)

{

            long int y=1;

            while(x!=0)

            {

                         y=y*x;

                         x--;

            }

             return y;

}

Output:

1.Enter the value of x : 1

    The result is 0.540302

2 Enter the value of x: 2

   The result is -0.416155

Conclusion: The program is error free  

VIVA QUESATIONS:

1)      What is function ?

Ans: A function is a sub program  it returns a value.

2)      What is procedure ?

Ans: A procedure is a sub program it does not returns a value  

    

3)      What are the basic data types in C ?

Ans: int, char, float, double

4)      How to define preprocessor ?

Ans: By using the # symbal Ex: #include<stdio.h