Question

In: Computer Science

Write the algorithm of program that evaluates the series 5-10+7+15+920+11+25+… up to x terms, where the...

Write the algorithm of program that evaluates the series 5-10+7+15+920+11+25+… up to x terms, where the value of x is taken as input from the user. For example, the sum of the given series up to 3 terms should give 2 as output (5-10+7=2), similarly, the sum of this series up to 4 terms should give 17 as output (5-10+7+15=17),

Write this in psuedocode

Solutions

Expert Solution

Pseudocode for the series 5-10+7+15+9+20+11+25+…

  • OUTPUT "Enter the value of x"                                //Prompt for value of x from user
  • INPUT Read value of x from user                              //Read value of x
  • SUM=0                                                                 //Initialize variables
  • START1=5
  • START2=10
  • FOR each i in [1,x]                                               //Loop through to reach x find sum and display series

              IF i==1 AND i!=x                                            //(5- display

                    OUTPUT '('+START1+'-'

                   SUM=SUM+START1

             START1=START1+2

          ELSE IF i==1                                                    //Display (5

                OUTPUT '('+START1

          SUM=SUM+START1

         ELSE IF i==2                                                   //Display(5-2

                OUTPUT START2+'+'

          SUM=SUM-START2

       ELSE IF i==x AND i%2==0                            //Last display

          OUTPUT 'START2

              SUM=SUM+START2

      ELSE IF i==x AND i%2!=0                                //Last display

           OUTPUT START1

           SUM=SUM+START1

     ELSE                                                               //Otherwise

          IF i%2==0

                OUTPUT START2+'+'

                SUM=SUM+START2

                STARt2=START2+5

         ELSE

               OUTPUT START1+'+'

                SUM=SUM+START1

                STARt1=START1+2

  • OUTPUT ") = "+SUM                                          //Close series and display sum

--------------------------------------------------------------------------------------------------------------------------------------

Note:-

I assume the given series 920 means 9+20

venereology answered 10 months ago
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