help needed

**striped bass** · 12-05-2005

i am so confused about those two questions. can some one give me a hint or two. appreciate

1.Write a function max that has two string parameters and returns the larger of the two, that is, a string should be returned. (By larger we mean alphabetically, thus the string "b" is greater then the string "apple". The lengths of the two strings are not being compared.)

2.Write a function min that has three string parameters and returns the smallest.

for number 2 i come up something => min ("a","b","c",)

**ssharish2005** · 12-05-2005

Originally Posted by striped bass

i am so confused about those two questions. can some one give me a hint or two. appreciate

1.Write a function max that has two string parameters and returns the larger of the two, that is, a string should be returned. (By larger we mean alphabetically, thus the string "b" is greater then the string "apple". The lengths of the two strings are not being compared.)

2.Write a function min that has three string parameters and returns the smallest.

for number 2 i come up something => min ("a","b","c",)

use strcmp function for the first question to compace two string

hint on fucntion strcmp

Code:

string1 > string2 ==> returs > 0
string1 == string2 ==> retutn 0
string1 < string2 ==> return < 0

and for the second one strcmp to compare string again

ssharish2005

**Silfer** · 12-05-2005

Well, strcmp() does what your number 1 should, more or less, altho I suppose you should implement it "from scratch". You should google the ascii table - chars in C follow it. Hint nr. 2: Chars are numeric, so you can do arithmetics on them, and also compare them.

Your function would look something like this:

Code:

char* max(char* foo, char* bar) {

//get length of both strings

//compare first character of both strings
//if one is bigger, return that string.
//else they are equal, compare the second character from both
//provided both strings have one. (that's why you want the length of both strings)
//loop

}

For the second function, much the same, only with three strings.

**cwr** · 12-05-2005

Hint 1: use strcmp.

Hint 2: make an attempt at assignments and post your attempt before coming here for help.

**striped bass** · 12-05-2005

for the first one i got

Code:

max(s1,s2);
{
if (strcmp("s1", "S2")>0)
  returns "s1";
 else if (strcmp("s1", "S2")>0) 
    return "s2";
}

however, still not correct.... wondering why?

for the second one :

Code:

if (strcmp(name1, name2)<=0 && strcmp(name1, name3)<=0)
min = name1;
if(strcmp(name2, name1)<=0 && strcmp(name2, name3)<=0)
min = name2;
if (strcmp(name3, name1)<=0 && strcmp(name3, name2)<=0)
min = name3;

...... still not correct!!!

appreciate for the previousi hint.. wish this time i can get it right.

**Silfer** · 12-05-2005

1. s2 and S2 are not the same, C is case sensitive.
2. s1 is a variable name, "s1" is the string of two characters 's' and '1' with a \0 at the end.
3. strcmp() returns a value that tells you which string is bigger, or if they are equal - so no need for a second call to it.

As for your second function, if you compare two strings, you know which of them is smallest. Then you need but compare it to the third string, so you don't need more than two calls to strcmp().

edit: Oh, and it would be

Code:

char* max(s1, s2) { /*code*/ }

Question: Did you even try to compile that which you posted here?

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