Lecture 12 Objectives

KNOW:

• That a string is a pointer to a null-terminated array of char
• The difference between declaring a string as a pointer to a char, and as an array of char

BE ABLE TO:

• Declare a string using a pointer to a char, or an array of char
• Use I/O statements scanf, fgets, printf, puts to input and output strings
• Write a function that uses array subscripts to process a string
• Write a function that uses pointers to process a string

Sample Exam Question:

Write a function that will capitalize all the vowels in a string. Here are the pre- and post-conditions for the function, and the function heading:

PRE:  string1 is a string.  string2 points to an array with length >= strlen(string1)
POST: string2 is a string identical to string1, except that all vowels
      in string1 have been converted to capital letters in string2

      void bigVowels (const char *string1, char *string2)