Question

compilation error in VC++

Asked by: sanko50

compilation error

code:-----------------------------------------------------------------------

#include<stdio.h>

 void func(int);

int main()

{

int A[20];

A[0]=123;

A[1]=456;

func(A);

printf(" %d",A[2]);

return 0;

}

func(int A[20])

{   A[2] = A[0] + A[1];

}

-------------------------------------------------------------------------------


why there is compilation error????

i am giving the error found in VC++

global1.cpp
E:\global1.cpp(16) : error C2664: 'func' : cannot convert parameter 1 from 'int [20]' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
E:\global1.cpp(28) : warning C4508: 'func' : function should return a value; 'void' return type assumed
Error executing cl.exe.

global1.obj - 1 error(s), 1 warning(s)



question1: what is the meaning of the first error???? have i done anywhere wrong in this program..... i want to find out my error.

question2: how can i remove that error.

thanks

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Asked On
2003-12-25 at 04:37:39ID20834528
Topic

C++ Programming Language

Participating Experts
3
Points
30
Comments
5

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Answers

 

by: RanjeetRainPosted on 2003-12-25 at 04:40:28ID: 9999664

It is against site policy to help people do their assignments from this site. This site is not meant for such purposes.

 

by: hongjunPosted on 2003-12-25 at 04:41:00ID: 9999666

correct code is this

#include<stdio.h>

void func(int []);

int main()

{
      
      int A[20];
      
      A[0]=123;
      
      A[1]=456;
      
      func(A);
      
      printf(" %d",A[2]);
      
      return 0;
      
}

void func(int A[])

{   A[2] = A[0] + A[1];

}



hongjun

 

by: hongjunPosted on 2003-12-25 at 04:44:39ID: 9999676

you encounter the error is because you are trying to pass in an array but then the function prototype is an int. The definition header is of an array! They do not match. You get the warning because your prototype returns a void but then the definition returns an integer (without any is by default int).

hongjun

 

by: AlexFMPosted on 2003-12-25 at 04:45:19ID: 9999680

Well, we can help to do homework, but it is not allowed to do it completely. Student who need to do the homework should try to write some code and ask here if there are specific problems.

Change program by by the following way:


void func(int*);

int main()

{

int A[20];

A[0]=123;

A[1]=456;

func(A);

printf(" %d",A[2]);

return 0;

}


void func(int* A)

{  
    A[2] = A[0] + A[1];
}

 

by: sanko50Posted on 2003-12-25 at 05:16:44ID: 9999725

RanjeetRain
---------------
this SMALL CODE  is not a homework......i wrote this to test how the array passing can be done and how it can change the value . but i was stumbled to see the error.... i could not debug it.....thats why i emphasised
why there is error ????i wrote question1 and question2 to make you feel where exactly i have the problem........

hongjun..
----------
yes i have understood the cause of error. and i have corrected it. thanks

20120131-EE-VQP-002

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