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int func(int * pi)
{
    *pi = 3;
    cout < < "new pi:" < < *pi < < endl;
    return 0£»
}

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int func(int & pi)
{
    pi = 3;
    cout < < "new pi:" < < pi < < endl;
    return 0£»
}

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C/C++ code:
/* messagebox.c */

#include <windows.h>

void MsgBox(char* lpszTitle, char* lpszMsg){
MessageBox(NULL, lpszMsg, lpszTitle, MB_OK);
}


±àдmessagebox.i
C/C++ code:
%module messagebox
%{
extern void MsgBox(char* lpszTitle, char* lpszMsg);
%}

extern void MsgBox(char* lpszTitle, char* lpszMsg);


ʹÓÃswigÉú³Émessagebox_wrap.


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#include <stdio.h>
main()
{
int a,b,sum;
a=1;b=2;
sum=a+b;
printf("sum is %d\n");
}


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