How do I use multiple for loops C++ while obtaining the sum of income and expense? -

i'm uber new c++ , learning loops.

this homework problem:

the sales manager @ mystore wants program allows enter company's income , expense amounts, integers. number of income , expense amounts may vary each time program run. example, sales manager may need enter 5 income amounts , 3 expense amounts. or, may need enter 20 income amounts , 30 expense amounts. program should calculate , display company's total income, total expenses, , profit (or loss).

i trying use 2 loops sum of expense , income keep getting wrong sum second loop. i'm not sure if should use multiple loops or different together. appreciate help. thanks!

here part of i've got far:

if (incnum > 0) {   // income items , calculate sum total.   (int count = 1; count <= incnum; count++)   {      cout << "enter income items: " << count << ": ";     cin >> income;     sumincome += income;   // calculate sum total.   } }  // display total income. cout << fixed << showpoint << setprecision(2); cout << "the total sum of income $" << sumincome << endl; cout << "income=" << income << endl;   // number of items income. cout << "how many items have enter expenses?"; cin >> expnum;  if (expnum > 0) { // expense items , calculate sum total.   (int count = 1; count <= expnum; count++)   {      cout << "enter expense items" << count << ":";     cin >> expense;     sumexpense += expense;   // calculate sum total.   }  } // display total income.  cout << fixed << showpoint << setprecision(2); cout << "the total expense items $" << sumexpense << endl; 

initialise sumincome , sumexpense zero

int sumincome=0; int sumexpense=0; int profitorloss=0; 

if don't initialize variable , used in arithmetice operation garbage value come play might cause

if(sumexpense>sumincome) {     cout<<"total loss"<<sumexpense-sumincome; } else {     cout<<"total profit"<<sumincome-sumexpense; }