Question

1. (3 pts) Fill in the blanks in the following C statement such that it allocates memory for an array of 50 character values:

char *name = (                ) malloc(                        );

2. (3 pts) Write a declaration for an array a of 10 strings, each of which has at most 80 characters (including the null character):
   
                                                __________________________________________

3. (6 pts) Circle or underline all syntax, logic, and runtime errors found in the following C fragment. Be sure to circle omitted punctuation.

char *name_ptr == NULL, name[50] = “Barack Obama”,

        *name2 = “Joe Biden”;

                  name_ptr = name[0];

                  do

                  {

                           printf (“Enter a new name: ”)

                           scanf (“%c”, name_ptr);

                  while (name == name2);

                 

                                                          

4. (2 pts) What are two advantages of using recursion in a C program?

1. __________________________________________________________________

2. __________________________________________________________________

5. (8 pts) Complete the following statements based on this declaration. Assume that the operations are cumulative:

         char taste[11] = "bitter", touch[5] = "soft";

The value of strlen(taste) is                 . The contents of touch[4] is                .

The value of strcmp(“soft”, taste) is negative/positive/zero (circle one). The contents of touch after the call strncpy(touch, taste, 3) is                          . The contents of taste[2] after the call strncat(taste, &touch[3], 1) is                                    .

Answer 1

1) char *name=(char*)malloc(noOfCharacters*sizeof(char));

here number of characters are the length of string you want to store on heap.

2) char array[10][80];

The above declaration makes an array with 10 rows of 80 columns each.The column contains the characters in some sprecific-row string.

3)
I error: *name_ptr==NULL ....... make it *name_ptr=NULL. == is a comparator operator and not an assignment operator.

II error: Mising open brace "{" in the do while block.

III error: name_ptr=name[0] .... make this statement as name_ptr=name;

4)

1)more simpler logic and less complex code.
2)reduce unnecessary calling of functions.

5)
strlen(taste)=6
touch[4]='\0' ... the string terminating character.
the value is negative
contents of touch is "ter"
the content of atste[2] after strcat is "f"