Run time error in cpp

help
1

getting runtime error while reading 2d arrays
my code:
int ar[3][3];
for(int i=0;i<3;i++)
for(int j=0;j<3;j++)
cin>>ar[i][j];

2

Please post the entirety of your code (assuming it’s not from an ongoing Contest), formatted: I can’t see any reason why that would crash.

1 Like
3 
#include <iostream>

using namespace std;
int alist[4][10];
int main() {
    int i=0,j=0,n;
    cin>>n;
    for(i=0;i<3;i++)
    {
    for(j=0;i<n;j++)
    {
    cin>>alist[i][j];
    }
    
    
    }
    cout<<"hello";

 return 0;
}
4

i have included iosteam

5

Formatted, please :slight_smile:
What input is causing this to crash? What Problem are you solving?

Edit:

This code is significantly different to the code you posted in the OP.

1 Like
6

This will give out of bounds error when n > 10.

1 Like
7

j=0;i<n;j++ is your problem.
Here is a tutorial on how to indent code in c++

3 Likes
8

cp1
cp11042×765 22.7 KB
cp2
cp21064×741 13.8 KB

9

@everule1 has already pointed out your mistake. In second loop you have written i<n