Exercise: Complicated Declarations

Questions for: Complicated Declarations

What will be the output of the program?
#include<stdio.h>
typedef void v;
typedef int i;

int main()
{
    v fun(i, i);
    fun(2, 3);
    return 0;
}
v fun(i a, i b)
{
    i s=2;
    float i;
    printf("%d,", sizeof(i));
    printf(" %d", a*b*s);
}
A:
2, 8
B:
4, 8
C:
2, 4
D:
4, 12
Answer: D
No answer description is available. Let's discuss.
What will be the output of the program (in Turbo C under DOS)?
#include<stdio.h>

int main()
{
    char huge *near *far *ptr1;
    char near *far *huge *ptr2;
    char far *huge *near *ptr3;
    printf("%d, %d, %d\n", sizeof(ptr1), sizeof(ptr2), sizeof(ptr3));
    return 0;
}
A:
4, 4, 8
B:
2, 4, 4
C:
4, 4, 2
D:
2, 4, 8
Answer: C
No answer description is available. Let's discuss.
What will be the output of the program?
#include<stdio.h>

int main()
{
    char huge *near *far *ptr1;
    char near *far *huge *ptr2;
    char far *huge *near *ptr3;
    printf("%d, %d, %d\n", sizeof(**ptr1), sizeof(ptr2), sizeof(*ptr3));
    return 0;
}
A:
4, 4, 4
B:
2, 2, 2
C:
2, 8, 4
D:
2, 4, 8
Answer: A
No answer description is available. Let's discuss.
What will be the output of the program in DOS (Compiler - Turbo C)?
#include<stdio.h>
double i;

int main()
{
    (int)(float)(char) i;
    printf("%d", sizeof((int)(float)(char)i));
    return 0;
}
A:
1
B:
2
C:
4
D:
8
Answer: B
Due to the C language is being platform dependent:

In Turbo C (DOS - 16 bit platform), the output will be 2.

But in GCC (Unix/Linux - 32 bit platform), the output will be 4.
What will be the output of the program?
#include<stdio.h>

int main()
{
    char far *near *ptr1;
    char far *far *ptr2;
    char far *huge *ptr3;
    printf("%d, %d, %d\n", sizeof(ptr1), sizeof(ptr2), sizeof(ptr3));
    return 0;
}
A:
4, 4, 8
B:
4, 4, 4
C:
2, 4, 4
D:
2, 4, 8
Answer: C
No answer description is available. Let's discuss.
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