Relational Operators

I'm taking a programming course, and have never wrote code before so this might seem like a dumb question...

I was given some values for some variables ( B=5 C=10 etc...) and was told to use the different Relational Operators with the sample equations given.

So far I have:

Quote:

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int B=5, C=10, D=20, E=64, F=2, A;

printf("Is B Greater Than C? %d\n", B>C);

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I can't get it to output true or false ... I keep getting 0 or 1 and I haven't found a reference anywhere to tell me how to get it to say false or true when it is compiled.

Thanks :)

That's note the way to do it. When you perform a comparison, the operator does not literally return "true", it just returns a boolean value understood to mean true. What you should do is use some conditionals.

Code:

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if(B>C) printf("B is greater than C");
if(B<C) printf("C is greater than B");

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or:

Code:

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printf("Is B Greater Than C? %s\n", B > C ? "true" : "false");

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or as a function:

Code:

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const char * boolStr(int boolean) {
 if(boolean) {
  return "true";
  } else {
  return "false";
  }
 }

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Code:

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printf("Is B Greater Than C? %s\n", boolStr(B > C));

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Quote:

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Code:
printf("Is B Greater Than C? %s\n", B > C ? "true" : "false");

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Very nice! I had totally forgotten about that operator!

Thanks for the help, saved me from a major headache. :D

I went with

Quote:

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printf("Is B Greater Than C? %s\n", B > C ? "true" : "false");

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and it worked out great.

I have another problem now which stems from this though ...

Quote:

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printf("Is D Greater than or less than 20? %s\n", (D<>20) ? "True" : "False");

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I get a parse error when i go to compile.

Quote:

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25 c:\mydocu~1\elizab~1\progra~1\lab22~1.c
parse error before `>'

25 c:\mydocu~1\elizab~1\progra~1\lab22~1.c
parse error before A-
`n\n"(a~122~1In fion n':

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and cannot figure out what is wrong.

Code:

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D<>20

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There's no such operator... If you mean to see if it's either of the two, the not-equal operator is !=, but you might have just hit an extra key by mistake.

I didnt think it was an operator ... but its there on the lab sheet as an equation...

"D<>20"

I'll just go with != then and hope it works out teh way he wants it.

<> isn't an operator. :D I'm not sure what you're trying to do there but you can string together ternary operators like this:

printf("D is %s 20.\n", D > 20 ? "Greater Than" : D < 20 : "Less Than" : "Equal");

Quote:

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but its there on the lab sheet as an equation...

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:eek: I feel sorry for you, if you're having to learn C from a guy that actually thought that that was an operator, but at the same time it's pretty funny :D

rofl I can see where its funny for you, but not so funny for me.

He gave us a lab in which we have to make 2 programs ... and he has yet to teach us any c? So this has been real interesting ...