Programming Forums > Application Development > C

Intimidat0r · Jul 2nd, 2005, 9:40 PM

okay im using dev-C++ with the gcc compiler and when i have a prototype like this:

void LoadVariable(char *);

and here's the code for that function:

(Toggle Plain Text)

void LoadVariable(char *Name) /* Load a Variable to the Primary */
{   
    char a_string[30];		/* Register */
    strcpy(a_string, "mov  ax, ");
    strcat(a_string, Name);
    EmitLn(a_string);
}

(yeah EmitLn() is a function and i #included'ed <string.h> so that's fine). but when i try to compile dev-C++ says "Conflicting types for LoadVariable()" and says it's on the line for its prototype. and then it says "previous implicit declaration of LoadVariable() was here" for the line where i try to call it.

can anybody help???

EverLearning · Jul 2nd, 2005, 9:47 PM

How do you call the function? from where-ever it is you need to call it.
It seems like you may be calling it "wrong" according to the prototype, i.e. it is argument mismatch and the debugger points you back to the prototype.

grumpy · Jul 2nd, 2005, 10:09 PM

It sounds like the compiler is seeing the prototype after the code where the function is called. For example;

(Toggle Plain Text)

int main()
{
    char *something[] = whatever();
    LoadVariable(something);
}

void LoadVariable(char *);

In this case, the LoadVariable seen by main() is actually an implicit declaration of a function that returns int. That implicit declaration is different from the subsequent actual declaration, hence the complaint from the compiler.

You might also see something similar if you attempt to pass arguments of different type than char * to LoadVariable(). For example, if you pass a const char * .....

Jul 2nd, 2005, 9:40 PM	#1
Intimidat0r Hobbyist Programmer Join Date: May 2005 Location: Don't know, but the padded walls are a nice touch. Posts: 126 Rep Power: 0	troublesome c problem okay im using dev-C++ with the gcc compiler and when i have a prototype like this: (Toggle Plain Text) void LoadVariable(char ); void LoadVariable(char ); and here's the code for that function: (Toggle Plain Text) void LoadVariable(char Name) / Load a Variable to the Primary / { char a_string[30]; / Register / strcpy(a_string, "mov ax, "); strcat(a_string, Name); EmitLn(a_string); } void LoadVariable(char Name) /* Load a Variable to the Primary / { char a_string[30]; / Register */ strcpy(a_string, "mov ax, "); strcat(a_string, Name); EmitLn(a_string); } (yeah EmitLn() is a function and i #included'ed <string.h> so that's fine). but when i try to compile dev-C++ says "Conflicting types for LoadVariable()" and says it's on the line for its prototype. and then it says "previous implicit declaration of LoadVariable() was here" for the line where i try to call it. can anybody help??? __________________ Children in the dark cause accidents, and accidents in the dark cause children. http://www.ronincoders.org

Jul 2nd, 2005, 9:47 PM	#2
EverLearning Hobbyist Programmer Join Date: May 2005 Location: Indiana Posts: 130 Rep Power: 4	How do you call the function? from where-ever it is you need to call it. It seems like you may be calling it "wrong" according to the prototype, i.e. it is argument mismatch and the debugger points you back to the prototype. __________________ got math? yumm... "All men by nature desire to know" -Aristotle, Metaphysics

Jul 2nd, 2005, 10:09 PM	#3
grumpy Programming Guru Join Date: Jun 2005 Location: Adelaide, South Australia Posts: 1,223 Rep Power: 5	It sounds like the compiler is seeing the prototype after the code where the function is called. For example; (Toggle Plain Text) int main() { char something[] = whatever(); LoadVariable(something); } void LoadVariable(char ); int main() { char something[] = whatever(); LoadVariable(something); } void LoadVariable(char ); In this case, the LoadVariable seen by main() is actually an implicit declaration of a function that returns int. That implicit declaration is different from the subsequent actual declaration, hence the complaint from the compiler. You might also see something similar if you attempt to pass arguments of different type than char * to LoadVariable(). For example, if you pass a const char * .....

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Programming Forums > Application Development > C

troublesome c problem