#include<iostream>#include<vector>#include<string>usingnamespace std;voidmain(){
vector<string> sells ={"January","February","March","April","May","June","July","August","September","October","November","December"};
vector<int>number(12);int total =0;for(int i =0; i <12; i++){
cout <<"Total sells in "<< sells[i]<<" is:"<< endl;
cin >> number[i];
total += number[i];}
cout <<"total sells is"<< total << endl;}
6
#include<iostream>#include<vector>#include<string>usingnamespace std;voidmain(){
vector<vector<string>>sells(3,vector<string>(12));
sells={{"January","February","March","April","May","June","July","August","September","October","November","December"},{"January","February","March","April","May","June","July","August","September","October","November","December"},{"January","February","March","April","May","June","July","August","September","October","November","December"}};
vector<vector<int>>number(3,vector<int>(12));int total_per_year[3]={0,0,0};int total =0;for(int j =0; j <3; j++){for(int i =0; i <12; i++){
cout <<"Total sells in "<< sells[j][i]<<" No."<<j+1<<"year is:"<< endl;
cin >> number[j][i];
total_per_year[j]+= number[j][i];
total += number[j][i];}
cout <<"total sells in No."<< j+1<<" year is"<< total_per_year[j]<< endl;}
cout <<"total sells of all years is"<< total << endl;}