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#include<stdio.h>
#include<stdio.h>
#include<stdlib.h>
voidswap( void*a, void*b, size_t size );
intmain(void)
{
doublehi = 12.345, good = 543.21;
printf( "hi = %lf\tgood = %lf\n", hi, good );
swap( &hi, &good, sizeof(double) );
printf( "hi = %lf\tgood = %lf\n", hi, good );
return0;
}
// byte-by-byte swap
voidswap( void*a, void*b, size_t size )
{
size_t i;
char*p = (char*)a;
char*q = (char*)b;
chartemp;
for( i = 0; i < size; i++, p++, q++ )
{
temp = *p;
*p = *q;
*q = temp;
}
}
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