[Edit] The problem is that when we input values, we get ridiculous figures like 4586368.
#include "stdafx.h" #include <stdio.h> #include <stdlib.h> #include <ctype.h> #include <math.h> void main() { int room[20] = {}; int i; int rooms = 0; char option = 0; int lights = 0; int hrsUsed = 0; int Telly = 0; int TVWatt =0; int sumTV; int TVuse = 0; int Computer = 0; int compWatt = 0; int compUsed = 0; int compTotal; int kwH_lights; int fridge = 0; int washLoad = 0; int dryerLoad = 0, dishLoad = 0, cookLoad = 0; int showeruse = 0; int total_kWh; printf("Enter number of rooms"); scanf_s("%d", &rooms); for(i=0;i<rooms;i++) { printf("input average wattage of lights"); scanf_s("%d", &lights); lights=lights/1000; printf("input number of hours use/day (average)"); scanf_s("%d", &hrsUsed); kwH_lights=((lights*hrsUsed)*365); printf("input number of TVs"); scanf_s("%d", &Telly); printf("input average wattage"); scanf_s("%d", &TVWatt); printf("input average use a day"); scanf_s("%d", &TVuse); sumTV=((Telly*(TVWatt/1000))*TVuse)*365; } printf("Input number of fridge/freezer"); scanf_s("%d",&fridge); fridge=(fridge*2)*365; printf("input number of Computers and/or video game consoles in the house"); scanf_s("%d", &Computer); for(i=0;i<Computer;i++) { printf("input wattage"); scanf_s("%d", &compWatt); printf("input average hrs used/day"); scanf_s("%d", &compUsed); compTotal=((compWatt/1000)*compUsed)*365; } printf("Input average number of washing machine loads /day"); scanf_s("%d",&washLoad); washLoad=washLoad*365; printf("Input average number of clothes dryer loads/day"); scanf_s("%d",&dryerLoad); dryerLoad=(dryerLoad*3)*365; printf("Input average number of dishwasher loads/day"); scanf_s("%d",&dishLoad); dishLoad=(dishLoad*1.5)*365; printf("Input average cooking load/day"); scanf_s("%d",&cookLoad); cookLoad=(cookLoad*7)*365; printf("Input average hrs/day of shower usage"); scanf_s("%d",&showeruse); showeruse=(showeruse*7)*365; total_kWh=((kwH_lights)+(sumTV)+(fridge)+(compTotal)+(dryerLoad)+(dishLoad)+(cookLoad)+(showeruse)); printf("Total= %d", &total_kWh); }