A: #include
// Test to see if pointer hopping is worthwhile.
// strlen implemented with usual indexing mechanism. int strlen1( const char str[ ] )
{
int i;
for( i = 0; str[ i ] != '\0'; i++ )
;
return i;
}
// strlen implemented with pointer hopping. int strlen2( const char *str )
const char *sp = str;
while( *sp++ != '\0' )
return sp - str - 1;
// Quick and dirty main int main( )
char str[ 512 ];
cout << "Enter strings; use EOF-marker to terminate: " << endl;
while( cin >> str )
if( strlen1( str ) != strlen2( str ) )
cerr << "Oops!!!" << endl;
return 0;