I need help fixing a error

Question

Every time I run this code it gives me a “timeout:the monitored command dumped core” error and I can’t find the issue.

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main()
{
int b{};
int c{} ;
int a[c];

cin >> b;
c = (rand() % 4) ;

srand(time(0));
a[c] = {b};

cout << a[c];
return 0;
}

https://code.sololearn.com/cxul741j3RwC/?ref=app

Answer 1

Okay, save the code as new code bit, and share its link here so I can see the updated version. Leave the one in post Description as is, as a reference of where we started.

Here's how to share code link in case you didn't know how

https://www.sololearn.com/post/75089/?ref=app

Answer 2

int c{};
This initializes <c> by zero

int a[ c ];
This creates an array, but size is zero

a[ c ] = { b };
This assigns { b } for element in array <a> at index <c>. But array <a> is zero size, you are pushing something into a flattened box? how would it work?

One more thing, for better result, seed the RNG before generating a random number, not after. Call srand() before calling rand()

Answer 3

You need to specify a non zero value for <c>. Since your rand() call ranges from 0 ~ 3, you specify value of <c> around 4 or 5 to be safe.

int c{ 5 };

And move the line that calls srand() above the line that calls rand()

Answer 4

So what do i do to fix it

Answer 5

I did that but now it inly outputs the first number in the array