Can someone help me with this array excercise? I have an error in the sum part

Question

/* Escribe un programa que defina un vector de numeros y calcule si existe algun numero
en el vector cuyo valor equivale a la suma del resto de numeros del vector*/
#include<iostream>
#include<conio.h>
using namespace std;
int main(){
int cant, suma=0, arr[100], mayor=0;

cout<<"Ingrese la cantidad de digitos que va a tener el arreglo: "; cin>>cant;
for(int i=0; i<cant; i++){
cout<<"Ingrese el valor # "<<i+1<<" del arreglo: "; cin>>arr[i];
if(arr[i]>mayor){
mayor=arr[i];}}
cout<<"El numero mayor del arreglo es: "<<mayor<<endl;

for(int i=arr[0]; i<arr[cant]; i++){
suma += arr[i];}
cout<<"La suma es: "<<suma<<endl;

if(suma==mayor){
cout<<"El numero mayor es igual a la suma de todos los demas numeros"<<endl;
}else{
cout<<"El numero mayor no es igual a la suma de todos los demas numeros"<<endl;
}
getch();
return 0;
}

Answer 1

Hello Daniel Valdez,
In the sum part, you are using a for loop, which uses the condition i<arr[cant]... Where cant is the number of elements in arr...
Now the first element is arr[0], and the second is arr[1] and so on.. the last element is therefor arr[cant - 1]..
This is, why there is an segmentation error (access violation)...

And then there is a logical error in the for loop...
In this for loop, i represents the indices, so it should be starting at 0, and ending at cant - 1..
Furthermore arr[cant - 1] itself should also be taken into account, so you should check for <=...
And last but not least, mayor should not be taken into suma...
All in all, your for loop should be like:

for(int i = 0; i <= (cant-1); i++){
if (arr[i] != mayor)
{
suma += arr[i];
}
}

Hope this helps...

Answer 2

Maan, you're good. I only have a week learning to program. It's my first language. Now it runs, I've been struggling with this problem for two days

https://code.sololearn.com/cjYiNT3i799b
here's the link
thank you man