Assume integer is 2 bytes wide. What will be the output of the following code? #

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Question

Assume integer is 2 bytes wide. What will be the output of the following code?

#include<stdio.h>
#include<stdlib.h>
#define MAXROW 3
#define MAXCOL 4

int main()
{
    int (*p)[MAXCOL];
    p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p));
    printf("%d, %d\n", sizeof(p), sizeof(*p));
    return 0;
}

Options
A. 2, 8
B. 4, 16
C. 8, 24
D. 16, 32

Correct Answer

2, 8

More questions

1. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?
Options
A. Yes
B. No

Discuss

Correct Answer: Yes

2. Bitwise can be used to generate a random number.
Options
A. Yes
B. No

Discuss

Correct Answer: No

3. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.
Options
A. True
B. False

Discuss

Correct Answer: False

4. Bitwise & can be used to check if more than one bit in a number is on.
Options
A. True
B. False

Discuss

Correct Answer: True

5. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.
Options
A. True
B. False

Discuss

Correct Answer: False

Explanation:

False, the preprocessor cannot trap the errors, it only replaces the macro with the given expression. But the compiler will detect errors.

6. It is necessary that a header files should have a .h extension?
Options
A. Yes
B. No

Discuss

Correct Answer: No

Explanation:

No, the header files have any kind of extension.

7. Bitwise | can be used to set multiple bits in number.
Options
A. Yes
B. No

Discuss

Correct Answer: Yes

8. Bitwise & can be used to check if a bit in number is set or not.
Options
A. True
B. False

Discuss

Correct Answer: True

9. A pointer union CANNOT be created
Options
A. Yes
B. No

Discuss

Correct Answer: No

10. What will be the output of the program?

#include<stdio.h>
#include<stdlib.h>

int main()
{
    union test
    {
        int i;
        float f;
        char c;
    };
    union test *t;
    t = (union test *)malloc(sizeof(union test));
    t->f = 10.10f;
    printf("%f", t->f);
    return 0;
}

Options
A. 10
B. Garbage value
C. 10.100000
D. Error

Discuss

Correct Answer: 10.100000

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Complicated Declarations Constants Declarations and Initializations Expressions Floating Point Issues Input / Output Library Functions Pointers Strings Arrays Bitwise Operators C Preprocessor Command Line Arguments Control Instructions Functions Memory Allocation Structures, Unions, Enums Variable Number of Arguments

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CuriousTab

CuriousTab

Discussion

Assume integer is 2 bytes wide. What will be the output of the following code?
#include<stdio.h> #include<stdlib.h> #define MAXROW 3 #define MAXCOL 4 int main() { int (p)[MAXCOL]; p = (int () [MAXCOL])malloc(MAXROW sizeof(p)); printf("%d, %d\n", sizeof(p), sizeof(*p)); return 0; }

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Discussion

Assume integer is 2 bytes wide. What will be the output of the following code? #include<stdio.h> #include<stdlib.h> #define MAXROW 3 #define MAXCOL 4 int main() { int (*p)[MAXCOL]; p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p)); printf("%d, %d\n", sizeof(p), sizeof(*p)); return 0; }

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Assume integer is 2 bytes wide. What will be the output of the following code?
#include<stdio.h> #include<stdlib.h> #define MAXROW 3 #define MAXCOL 4 int main() { int (p)[MAXCOL]; p = (int () [MAXCOL])malloc(MAXROW sizeof(p)); printf("%d, %d\n", sizeof(p), sizeof(*p)); return 0; }