Why error in this code?

#1

#include
using namespace std;

int search(int arr,int n,int key){

int start=0;
int end=n-1;

int middle=(start+end)/2;

while(start<end){
	
	
	if(arr[middle]==key) return middle;
	else if(arr[middle]<key){
		start=middle;
	}
	else{
		end=middle;
	}
}

return -1;

}

int main() {

int n;
cin>>n;

int arr[n];

for(int i=0;i<n;i++){
	cin>>arr[i];
}

int key;
cin>>key;

search(arr[n],n,key);

return 0;

}

#2

hi @anshul3558_e8c9aa486c392ca3
start <= end
and middle should be inside while loop

#3

ITS SHOWING THIS ERROR!

source.cpp: In function ‘int search(int, int, int)’:
source.cpp:15:15: error: invalid types ‘int[int]’ for array subscript
15 | if(arr[middle]==key) return middle;
| ^
source.cpp:16:20: error: invalid types ‘int[int]’ for array subscript
16 | else if(arr[middle]<key){
| ^

#4

hi @anshul3558_e8c9aa486c392ca3 send the code on ide.codingblocks.com

#5
#6

hi @anshul3558_e8c9aa486c392ca3 updated

#7

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