Question

I am running issues with these problems in MATHEMATICA software Coding class. I have previously posted the same material but have been getting answers in c++,Java, etc... I thank the great minds on here but, I am ONLY FOCUSED WITH THE MATHEMATICA program. I wanted to compare my work to confirm my progress. So please only answers in Mathematica language. thank u

a. Using a while loop, prompt the user for to input 5 numbers (the input numbers should be 1, 5, 9, 12, 16). The program should sum ONLY numbers that are divisible by 3 b.This program should request numbers, (with -1 to quit). It should ask the user whether they want to add or multiply the numbers. Must use a for add and m for multiply. Complete the operation. The numbers you should enter to be added are 3,2 and 8. To be multiplied 2, 3, 5

Answer 1

a.

#include <iostream>
using namespace std;
int main() {
int i=0,n,sum=0;
while(i<5){
cin>>n;
if(n%3==0){
sum+=n;
}
  
}
cout<<sum;
}

b.

#include <iostream>
using namespace std;
int main() {
int a[100],i=0,sum=0,product=1;
cout<<"Enter nos.";
cin>>a[i];
i++;
while(a[i-1]!=-1){
cin>>a[i];
i++;
}
char choice;
cout<<"Enter 'a' for addition and 'm' for multiplication: ";
cin>>choice;
  
i-=2;
if(choice=='a'){
for(int j=0;j<=i;j++){
sum+=a[j];
}
cout<<sum;
}
  
else if(choice=='m'){
for(int j=0;j<=i;j++){
product*=a[j];
}
cout<<product;
}
  
  
}