Question

a. write a program that calculates the sum of two numbers x and y and then the program should call the function by address and prints the sum

b. write a program that stores 10 integers provided at run time in an array. the program should prompt the user for a random integer exit in the array, the value must be replaced by a-1

Answer 1

Here is the completed code for this problem. Since you didn’t mention the language, my best guess was C++. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

//first program

#include<iostream>

using namespace std;

//method to find and print the sum of two numbers passed by the addresses

void sum(int *a, int *b){

              cout<<*a<<" + "<<*b<<" = "<<(*a+*b)<<endl;

}

int main(){

              int x,y;

              //reading x and y

              cout<<"Enter the value for x: ";

              cin>>x;

              cout<<"Enter the value for y: ";

              cin>>y;

              //finding and printing sum, by passing the addresses of x and y to sum method

              sum(&x,&y);

              return 0;

}

//second program

#include<iostream>

using namespace std;

int main(){

              //declaring an integer array of 10 numbers

              int array[10];

              //number to replace

              int a;

              //prompting and reading 10 numbers

              cout<<"Enter 10 numbers: ";

              for(int i=0;i<10;i++){

                           cin>>array[i];

              }

              //prompting and reading number to replace

              cout<<"Enter a number to replace: ";

              cin>>a;

              //looping through array, finding a

              for(int i=0;i<10;i++){

                           if(array[i]==a){

                                         //found, replacing with a-1

                                         array[i]=a-1;

                           }

              }

              //displaying the modified array

              cout<<"Updated array: ";

              for(int i=0;i<10;i++){

                           cout<<array[i]<<" ";

              }

              cout<<endl;

              return 0;

}

/*OUTPUT1*/

Enter the value for x: 12

Enter the value for y: 15

12 + 15 = 27

/*OUTPUT2*/

Enter 10 numbers: 1 3 5 7 8 9 12 44 53 0

Enter a number to replace: 12

Updated array: 1 3 5 7 8 9 11 44 53 0