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Home ‣ C Programming ‣ Bitwise Operators See What Others Are Saying!
- Question
Bitwise can be used to generate a random number.
Options- A. Yes
- B. No
- Correct Answer
- No
- 1. Macro calls and function calls work exactly similarly.
Options- A. True
- B. False Discuss
- 2. Will the following functions work?
int f1(int a, int b) { return ( f2(20) ); } int f2(int a) { return (a*a); }
Options- A. Yes
- B. No Discuss
- 3. Functions can be called either by value or reference
Options- A. True
- B. False Discuss
- 4. Every function must return a value
Options- A. Yes
- B. No Discuss
- 5. What will be the output of the program assuming that the array begins at the location 1002 and size of an integer is 4 bytes?
#include<stdio.h> int main() { int a[3][4] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }; printf("%u, %u, %u\n", a[0]+1, *(a[0]+1), *(*(a+0)+1)); return 0; }
Options- A. 448, 4, 4
- B. 520, 2, 2
- C. 1006, 2, 2
- D. Error Discuss
- 6. What will be the output of the program assuming that the array begins at location 1002?
#include<stdio.h> int main() { int a[2][3][4] = { {1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1, 2}, {2, 1, 4, 7, 6, 7, 8, 9, 0, 0, 0, 0} }; printf("%u, %u, %u, %d\n", a, *a, **a, ***a); return 0; }
Options- A. 1002, 2004, 4008, 2
- B. 2004, 4008, 8016, 1
- C. 1002, 1002, 1002, 1
- D. Error Discuss
- 7. What will be the output of the program?
#include<stdio.h> int main() { char *p; p="%d\n"; p++; p++; printf(p-2, 23); return 0; }
Options- A. 21
- B. 23
- C. Error
- D. No output Discuss
- 8. What will be the content of 'file.c' after executing the following program?
#include<stdio.h> int main() { FILE *fp1, *fp2; fp1=fopen("file.c", "w"); fp2=fopen("file.c", "w"); fputc('A', fp1); fputc('B', fp2); fclose(fp1); fclose(fp2); return 0; }
Options- A. B
- B. A
B - C. B
B - D. Error in opening file 'file1.c' Discuss
- 9. A preprocessor directive is a message from compiler to a linker.
Options- A. True
- B. False Discuss
- 10. Bitwise can be used to perform addition and subtraction.
Options- A. Yes
- B. No Discuss
More questions
Correct Answer: False
Explanation:
False, A macro just replaces each occurrence with the code assigned to it. e.g. SQUARE(3) with ((3)*(3)) in the program.
A function is compiled once and can be called from anywhere that has visibility to the funciton.
Correct Answer: Yes
Explanation:
Yes, It will return the value 20*20 = 400
Example:
#include <stdio.h>
int f1(int, int); /* Function prototype */
int f2(int); /* Function prototype */
int main()
{
int a = 2, b = 3, c;
c = f1(a, b);
printf("c = %d\n", c);
return 0;
}
int f1(int a, int b)
{
return ( f2(20) );
}
int f2(int a)
{
return (a * a);
}
Output:
c = 400
Correct Answer: True
Explanation:
True, A function can be called either call by value or call by reference.
Example:
Call by value means c = sub(a, b); here value of a and b are passed.
Call by reference means c = sub(&a, &b); here address of a and b are passed.
Correct Answer: No
Explanation:
No, If a function return type is declared as void it cannot return any value.
Correct Answer: 1006, 2, 2
Correct Answer: 1002, 1002, 1002, 1
Correct Answer: 23
Correct Answer: B
Explanation:
Here fputc('A', fp1); stores 'A' in the file1.c then fputc('B', fp2); overwrites the contents of the file1.c with value 'B'. Because the fp1 and fp2 opens the file1.c in write mode.
Hence the file1.c contents is 'B'.
Correct Answer: False
Explanation:
FALSE
Example: #define symbol replacement
When the preprocessor encounters #define directive, it replaces any occurrence of symbol in the rest of the code by replacement. This replacement can be an statement or expression or a block or simple text.
Correct Answer: No
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