Don't know how to sold this exersise

This is a discussion on Don't know how to sold this exersise within the C Programming forums, part of the General Programming Boards category; Write a program that requests your first name and does the following with it: Prints it in a field three ...

  1. #1
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    Don't know how to sold this exersise

    Write a program that requests your first name and does the following with it:
    Prints it in a field three characters wider than the name.
    Code:
    #include <stdio.h>
    #include <string.h>
    
    int main ( void )
    {
    	char name[20];
    	scanf ( "%s", name );
    	printf ( "%s", name );//If my name is 5 characters long field must be 8
    						  //printf ( "%8s", name );
    	return 0;
    }
    But I don't know how long is scanf input ( name ). If I use strlen() function like this int x = strlen ( name ) I can't just write printf ( "%d%s",x, name). Can this exercise be solved?

  2. #2
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    I figure it out, just put *, like this printf ( "%*s", width, name );

  3. #3
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    Quote Originally Posted by dontoo View Post
    I figure it out, just put *, like this printf ( "%*s", width, name );
    I'd just put:
    Code:
    printf("%s   ", name);
    But the one who made the assignment should lose his license to teach. I always hate assignments that make no sense or can be fixed in a way that isn't allowed because it's not what they want to teach you on that moment.

    One thing though; you get a buffer overflow if the name is more than 19 characters. You should really add a length specification to the scanf. For fun, type in a hundred A's and see what happens ;-).

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