Wheres my Code error? It says free() isnt correct and im getting segmentation fa

Question

Wheres my Code error? It says free() isnt correct and im getting segmentation fault... Its in C NOT C++

#include<stdio.h>

void sort(int sorted[],int size);

int main()

{

int *arr;

int N,num,count;

printf("Enter how many integer you want to enter: ");

scanf("%d",&N);

int new[N];

int i;

for(i=0;i<N;i++)

{

printf("Enter integer %d: ", i+1);

scanf("%d",&arr[i]);

free(i);

}

sort(arr,N);

printf(" Number frequency");

for(i=0;i<N;)

{

count=1;

num=arr[i];

printf(" %d ",arr[i]);

while(arr[++i]==num){

count++;

}

printf("%d",count);

}

getchar();

return 0;

}

void sort(int sorted[],int size){

int i,j,temp;

for(i=0;i<size-2;i++)

{

for(j=0;j<size-1;j++)

{

if(sorted[j]<sorted[j+1]){

temp=sorted[j];

sorted[j]=sorted[j+1];

sorted[j+1]=temp;

}

}

}

return;

}

Explanation / Answer

PLease give the definition of the free() in the program.You dint do that

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