Thread: File input question

  1. #16
    Obsessed with C chrismiceli's Avatar
    Join Date
    Jan 2003
    or course remember this warning in the man page
           Never use this function.  This function modifies its first
           argument.   The  identity  of  the delimiting character is
           lost.  This function cannot be used on constant strings.
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  2. #17
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Waterloo, Texas
    float take_score (char first_names[][MAX_LETTERS], 
    				  char middle_names[][MAX_LETTERS], 
    				  char last_names[][MAX_LETTERS], 
    				  int student_num);
    why not use a structure instead of passing the arrays as arguments?

    	char grades[MAX_STUDENTS];
    	char first_names    [MAX_STUDENTS][MAX_LETTERS];
    	char middle_names   [MAX_STUDENTS][MAX_LETTERS];
    	char last_names     [MAX_STUDENTS][MAX_LETTERS];
    	float student_grades[MAX_STUDENTS][3];
    	float GPAs[MAX_STUDENTS];
    	float final_scores[MAX_STUDENTS];
    because this is what happens. You've got this completely unweildy grouping of data that really deserves to be put in a structure.

    struct name {
     char first[MAX_LETTERS];
     char middle[MAX_LETTERS];
     char last[MAX_LETTERS];
    struct student {
     struct name name;
     float grade;
     char letter_grade;
    // then:
    struct student[MAX_STUDENTS];
    parsing text can be achieved in many different ways - the most robust implementations typically set up a finite state machine of some sort, simpler ones utilize strtok, strstr, and functions like these:
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
        return std::pow
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;

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