This uses C

QUESTION 4 For this array: int a[ ] = { 0, 1, 2, 3, 4) What is the length of this array? 06 This code does not compile 04 O 5 QUESTION 5 What functions can you use to have a user input a string? fgets() input() Oscanf() O fscanf() QUESTION 6 This code is attempting to print out the string str in reverse. Which of the following for initialization statements will make this work correctly? int n = strlen( str); int 1; for( ; i >= 0; i--) printf("%c", str[ 1 ] ); O 1 != 0 O i = n - 1 i = 0 i =n QUESTION 7 What is the greatest index number for the following array? int nums [5]; 4 01 6