Question

1. Select all that are true for the following code.

#include <stdio.h>

#include <stdlib.h>

void range(int start, int end, int *results) {
  int length = end - start;
  results = malloc(sizeof(int) * length);
  for (int i=start; i<end; i++) {
    *results = i;
    results++;
  }
}

void printArray(int *arr, int length) {
  for (int i=0; i<length; i++) {
    printf("%d ", arr[i]);
  }
}

int main() {
  int *x;
  int s = 2;
  int e = 11;
  range(s, e, x);
  printArray(x, e - s);
  free(x);
}

OPTIONS:

a. No memory leaks, but it prints the wrong numbers

b. Type error in range(): cannot increment pointer

c. Memory error in range(): when dereferencing results

d. Memory error in printArray(): when dereferencing arr

e. Memory leak: did not free memory pointed too by arr

f. No memory leaks , and it prints the correct numbers

Answer 1

c. Memory error in range(): when dereferencing results
   // we are starting from start to end which is wrong
   // we should go from 0 to length
d. Memory error in printArray(): when dereferencing arr
   in print array we are sending x which is invalid
  
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