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Function calling (C)

 
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Function calling (C)
eLliDKraM
post 19 Nov, 2005 - 04:30 PM
Post #1


Pepè Le Pewn

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Haven't needed to call functions yet, but I'm getting an error and am not sure how to solve this.

CODE

void si();
void us();
void main()
{
    scanf("%d", unit);
    if(unit=1) si();  // calls the corresponding function via user input
    else us();
}
void si()  [B]line 24; line of error[/B]
{  
//more content..
}


Error:
QUOTE

(Line 24): warning #2027: Missing prototype for 'si'.

and

POLINK: error: Unresolved external symbol '_us'.
POLINK: fatal error: 1 unresolved external(s).


Not sure exactly what to do, and am confused why that code isn't allowing me to call the function void si() {. If you can help, much obliged.
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Amadeus
post 19 Nov, 2005 - 06:45 PM
Post #2


g++ -o drink whiskey.cpp

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What compiler are you running? I just compiled the following us gcc from the command line
CODE

void si();
void us();
int main()
{
int unit;
scanf("%d", unit);
if(unit=1)
{
  si();  // calls the corresponding function via user input
}
else
{
  us();
}
}

void si()
{  
//more content..
}

void us()
{  
//more content..
}

no errors.
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eLliDKraM
post 19 Nov, 2005 - 07:39 PM
Post #3


Pepè Le Pewn

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PellesC
http://www.smorgasbordet.com/pellesc/

also, It said it was just a warning so I figured it would still build, but for some reason it's being extraordinarily anal about this function naming thing.

This post has been edited by eLliDKraM: 19 Nov, 2005 - 07:41 PM
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eLliDKraM
post 20 Nov, 2005 - 08:46 AM
Post #4


Pepè Le Pewn

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What compiler are you running? This PellesC is such a hater when it comes to building, I'm thinking it's time to get a new one.
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Amadeus
post 20 Nov, 2005 - 09:40 AM
Post #5


g++ -o drink whiskey.cpp

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I run a bunch of them, everything from M$ Visual Studio to Dev C++, and different ones on different operating systems. The validation I did with your code was with GNU gcc using Cygwin as the interface, but I also ran it in VS, compiled fine. Both those were on windows machines, so I also ran it on my linux box...again, no compile errors.
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