CS 2213 Advanced Programming, Fall 2000 Exam 1 Comments

Grade Distribution:

Range	Number
90's	5
80's	14
70's	11
60's	19
50's	8
40's	5
30's	5

• Problem 2
  • a) The first indicates a function with no parameters and the second indicates a function whose parameters are unspecified.
  • b) *x++ is the same as *(x++);
  • d) labels have function scope so you can only jump to a label within the current function.
  • g) Only variables with static storage class are initialized by default.
• Problem 3
  Pointers take up 4 bytes, independent of what they are pointing to.
  For part h) the newline and the terminator each take up one byte.
• Problem 4
  • The function should return void.
  • If you write it to return a value, then you must have an appropriate return statement.
• Problem 5
  • In C, a string is an array of characters terminated by the string terminator character.
  • The string terminator is '\0', not '\n'.
  • Since no return value was specified, this function would return void.
  • You can determine the length of a string by looking for the terminator.
  • The first parameter should be the destination and the second parameter should be the source.
• Problem 6
  • In a heap, the parent and child may have the same value.
  • It is much easier to check the parent of each node, rather than the children of each node. Each node other than the root has a unique parent. Some nodes have no children, some may have one and some may have two. It is wrong to access the child of a node that does not have a child.
  • Try to make your programs simple to follow.
  • Do not print anything.
• Problem 7
  • A filter is a main program, not just a function.
  • You should look for an EOF not an end of line or string terminator.
  • " " is a string containing a single blank and takes up 2 bytes of storage. This is different from ' ' which is a character which takes up one byte of storage.
  • In this problem a tab is an ordinary character. Only blanks are special.
  • You need to assign the result of getchar to an integer if you are going to check for end of file.
  • When writing program it is best to write one statement per line.
  • This program should not print anything.