C++ Institute CPA 問題集

質問 1：
What will be the output of the program?
#include <iostream>
#include <string>
using namespace std;
int fun(int);
int main()
{
float k=3;
k = fun(k);
cout<<k;
return 0;
}
int fun(int i)
{
i++;
return i;
}
A. 3
B. 4
C. 5
D. 5
正解：B

質問 2：
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int op(int x, int y);
int main()
{
int i=2, j=2, k;
float f=0.3;
k = op(i, j);
cout<< k << "," << op(1, f);
return 0;
}
int op(int x, int y)
{
return x+y;
}
A. It prints: 4,0
B. It prints: 0,4
C. It prints: 4,1
D. It prints: 4,0.7
正解：C

質問 3：
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
int *a= new int;
*a=100;
cout << *a;
delete a;
}
A. It prints: 10
B. It prints: 0
C. It prints: 1
D. It prints: 100
正解：D

質問 4：
What is the output of the program given below?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
int i=10;
{
int i=0;
cout<<i;
}
{
i=5;
cout << i;
}
cout<<i;
return 0;
}
A. None of these
B. 101010
C. 1010
D. 055
正解：D

質問 5：
Which of the following structures are correct?
1:
struct s1{ int x; char c;
};
2:
struct s2{ float f; struct s2 *s;
};
3:
struct s3{ float f; in i;
}
A. 2
B. 3
C. All of these
D. 1
正解：A,D

質問 6：
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(int);
int main()
{
int a=0;
fun(a);
return 0;
}
void fun(int n) { if(n < 2) { fun(++n); cout << n; } }
A. It prints: 012
B. None of these
C. It prints: 0
D. It prints: 21
正解：D