My Code : CodeChef: Practical coding for everyone
Problem Statement : CodeChef: Practical coding for everyone
If I initialize my array like this, I get SIGSEGV
int *arr = (int*)calloc(N+1, sizeof(int));
and if I declare my array this, I get AC while submission
int arr[N+1];
Can someone help me understand this weird behaviour ?
calloc does set the allocated memory to 0.
For example, can you ever get a case for do { i++; } while(arr[i]<=pivot) where i goes over n? arr[n] is 0 in the calloc case, given that you deal with positive numbers, 0 will be smaller than any pivot.
global variables and static variables are automatically initialized to zero. If you had int arr[N+1] inside the main function, then it will not be initialized to 0.
Ohh I never thought of this, now I got it Thanks 