ENEE150 – 0102 ANDREW GOFFIN Strings

Project 2 Flight Database 4 options:  Print flight  Print airport  Find non-stop flights  Find one-stop flights 3 files:  flights.txt  airports.txt  routes.txt Goffin – ENEE150

Strings In C, Null terminated array of characters  Not a special datatype  Last character in array MUST be ‘\0’ char str[8] = “strings”;  Note how length is one longer than length of word “strings”  Double quotes automatically append ‘\0’  Use “%s” flag in printf/scanf  WARNING: Will also stop at spaces! Goffin – ENEE150

String Header File Relevant functions in string.h  int strlen(char *s)  Returns length of string s (DOESN’T include ‘\0’)  void strcpy(char *s1, char *s2)  Copies s2 to s1, including ‘\0’  int strcmp(char *s1, char *s2)  Compares s1 and s2 and returns: 0 if the strings are the same Non-zero if strings are different Actual non-zero value is usually irrelevant Goffin – ENEE150