61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
#include <memory>
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#include <cstdio>
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std::auto_ptr<int> intMaker();
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int main(){
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std::auto_ptr<int> a(new int (12));
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if(0 == a.get()){
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printf("a pointer is zero (BAD)\n");
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}else{
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printf("a pointer is non-zero (GOOD)\n");
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}
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printf("a value (should be 12): %i\n", *a);
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std::auto_ptr<int> b(a);
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if(0 == b.get()){
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printf("b pointer is zero (BAD)\n");
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}else{
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printf("b pointer is non-zero (GOOD)\n");
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}
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if(0 == a.get()){
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printf("a pointer is zero (GOOD)\n");
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}else{
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printf("a pointer is non-zero (BAD)\n");
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}
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printf("b value (should be 12): %i\n", *b);
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*b = 7;
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if(0 == b.get()){
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printf("b pointer is zero (BAD)\n");
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}else{
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printf("b pointer is non-zero (GOOD)\n");
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}
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printf("b value (should be 7): %i\n", *b);
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std::auto_ptr<int> c(intMaker());
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if(0 == c.get()){
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printf("c pointer is zero (BAD)\n");
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}else{
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printf("c pointer is non-zero (GOOD)\n");
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}
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printf("c value (should be 5): %i\n", *c);
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c.reset();
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if(0 == c.get()){
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printf("c pointer is zero (GOOD)\n");
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}else{
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printf("c pointer is non-zero (BAD)\n");
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}
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std::auto_ptr<int> x( new int(5) );
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std::auto_ptr<int> y( std::auto_ptr<int>( x ) );
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return 0;
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}
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std::auto_ptr<int> intMaker(){
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return std::auto_ptr<int> ( new int(5));
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}
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