Memory Allocation on C related Questions and Answers

Question :   Suppose we have a one dimensional array, named 'x', which contains 10 integers. Which of the following is the correct way to allocate memory dynamically to the array 'x' using malloc()? 1. x=(int*)malloc(10); 2. x=(int*)malloc(10,sizeof(int)); 3. x=malloc(int 10,sizeof(int)); 4. x=(int*)malloc(10*sizeof(int)); Answer :   4 - x=(int*)malloc(10*sizeof(int));