MCQOPTIONS
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MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Bitwise Operators knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the output of the program? #include int main() { unsigned int res; res = (64 >>(2+1-2)) & (~(1<<2> |
| A. | 32 |
| B. | 64 |
| C. | 128 |
| Answer» B. 64 | |
| 2. |
What will be the output of the program? #include int main() { char c=48; int i, mask=01; for(i=1; i<=5; i++) { printf("%c", c|mask); mask = mask<<1> |
| A. | 12400 |
| B. | 12480 |
| C. | 12500 |
| D. | 12556 |
| Answer» C. 12500 | |
| 3. |
What will be the output of the following C code? #include void main() { int x = 4, y, z; y = --x; z = x--; printf("%d%d%d", x, y, z); } |
| A. | 3 2 3 |
| B. | 2 2 3 |
| C. | 3 2 2 |
| D. | 2 3 3 |
| Answer» E. | |
| 4. |
What will be the output of the following C code? #include void main() { int x = 97; int y = sizeof(x++); printf("x is %d", x); } |
| A. | x is 97 |
| B. | x is 98 |
| C. | x is 99 |
| D. | Run time error |
| Answer» B. x is 98 | |
| 5. |
What will be the output of the following C code? #include int main() { unsigned int a = 10; a = ~a; printf("%d n", a); } |
| A. | -9 |
| B. | -10 |
| C. | -11 |
| D. | 10 |
| Answer» D. 10 | |
| 6. |
What will be the output of the following C code? #include int main() { int a = 2; if (a >> 1) printf("%d n", a); } |
| A. | 1 |
| B. | 2 |
| C. | No Output |
| Answer» D. | |
| 7. |
What will be the output of the following C code? #include int main() { int c = 2 ^ 3; printf("%d n", c); } |
| A. | 1 |
| B. | 7 |
| C. | 9 |
| Answer» B. 7 | |
| 8. |
What will be the output of the following C code? #include int main() { int y = 1; if (y & (y = 2)) printf("true %d n", y); else printf("false %d n", y); } |
| A. | true 2 |
| B. | false 2 |
| C. | either true 2 or false 2 |
| D. | true 1 |
| Answer» B. false 2 | |
| 9. |
What will be the output of the following C code? #include int main() { int x = -2; if (!0 == 1) printf("yes n"); else printf("no n"); } |
| A. | yes |
| B. | no |
| C. | run time error |
| D. | undefined |
| Answer» B. no | |
| 10. |
What will be the output of the following C code? #include int main() { int y = 0; if (1 |(y = 1)) printf("y is %d n", y); else printf("%d n", y); } |
| A. | y is 1 |
| B. | 1 |
| C. | run time error |
| D. | undefined |
| Answer» B. 1 | |
| 11. |
What will be the output of the following C code? #include int main() { if (7 & 8) printf("Honesty"); if ((~7 & 0x000f) == 8) printf("is the best policy n"); } |
| A. | Honesty is the best policy |
| B. | Honesty |
| C. | is the best policy |
| D. | No output |
| Answer» D. No output | |
| 12. |
Left shift (<<) and Right shift (>>) operators are equivalent to _____________ by 2. Choose the correct words... |
| A. | Multiplication and Division |
| B. | Division and Multiplication |
| C. | Multiplication and Remainder |
| D. | Remainder and Multiplication |
| Answer» B. Division and Multiplication | |
| 13. |
Which Bitwise Operator can be used to check whether a number is EVEN or ODD quickly? |
| A. | Bitwise AND (&) |
| B. | Bitwise OR (|) |
| C. | Bitwise XOR (^) |
| D. | Bitwise NOT (~) |
| Answer» B. Bitwise OR (|) | |
| 14. |
Which statement is suitable to check 3rd (count from 0) bit is high (set) or not? |
| A. | (num & (1<<3)) |
| B. | (num & 0x08) |
| C. | (num & 0x03) |
| D. | Both (1) and (2) |
| Answer» E. | |
| 15. |
Predict the output of following program. #include int main() { char flag=0x0f; flag &= ~0x02; printf("%d",flag); return 0; } |
| A. | 13 |
| B. | d |
| C. | 22 |
| D. | 10 |
| Answer» B. d | |
| 16. |
Consider the given statement: int x = 10 ^ 2 What will be the value of x? |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» E. | |
| 17. |
Predict the output of following program. #include int main() { int x=10; x &= ~2; printf("x= %d",x); return 0; } |
| A. | x= 10 |
| B. | x= 8 |
| C. | x= 12 |
| D. | x= 0 |
| Answer» C. x= 12 | |
| 18. |
Predict the output of following program. #include int main() { char var=0x04; var = var | 0x04; printf("%d,",var); var |= 0x01; printf("%d",var); return 0; } |
| A. | 8,9 |
| B. | 4,5 |
| C. | 8,8 |
| D. | 4,4 |
| Answer» C. 8,8 | |
| 19. |
Predict the output of following program. #include #define MOBILE 0x01 #define LAPPY 0x02 int main() { unsigned char item=0x00; item |=MOBILE; item |=LAPPY; printf("I have purchased ...:"); if(item & MOBILE){ printf("Mobile, "); } if(item & LAPPY){ printf("Lappy"); } return 1; } |
| A. | I have purchased ...: |
| B. | I have purchased ...:Mobile, Lappy |
| C. | I have purchased ...:Mobile, |
| D. | I have purchased ...:Lappy |
| Answer» C. I have purchased ...:Mobile, | |
| 20. |
Predict the output of following program. #include int main() { int a=10; int b=2; int c; c=(a & b); printf("c= %d",c); return 0; } |
| A. | c= 12 |
| B. | c= 10 |
| C. | c= 2 |
| D. | c= 0 |
| Answer» D. c= 0 | |
| 21. |
Which is not a bitwise operator? |
| A. | & |
| B. | | |
| C. | << |
| D. | && |
| Answer» E. | |
| 22. |
What will be the output of the program? #include int main() { unsigned char i = 0x80; printf("%d n", i<<1> |
| A. | 256 |
| B. | 100 |
| C. | 80 |
| Answer» C. 80 | |
| 23. |
If an unsigned int is 2 bytes wide then, What will be the output of the program ? #include int main() { unsigned int a=0xffff; ~a; printf("%x n", a); return 0; } |
| A. | ffff |
| B. | 0000 |
| C. | 00ff |
| D. | ddfd |
| Answer» B. 0000 | |
| 24. |
Assuming a integer 2-bytes, What will be the output of the program? #include int main() { printf("%x n", -1<<3> |
| A. | ffff |
| B. | fff8 |
| C. | 0 |
| D. | -1 |
| Answer» C. 0 | |
| 25. |
In which numbering system can the binary number 1011011111000101 be easily converted to? |
| A. | Decimal system |
| B. | Hexadecimal system |
| C. | Octal system |
| D. | No need to convert |
| Answer» C. Octal system | |
| 26. |
What will be the output of the program ? #include int main() { int i=32, j=0x20, k, l, m; k=i|j; l=i&j; m=k^l; printf("%d, %d, %d, %d, %d n", i, j, k, l, m); return 0; } |
| A. | 0, 0, 0, 0, 0 |
| B. | 0, 32, 32, 32, 32 |
| C. | 32, 32, 32, 32, 0 |
| D. | 32, 32, 32, 32, 32 |
| Answer» D. 32, 32, 32, 32, 32 | |
| 27. |
What will be the output of the program? #define P printf("%d n", -1^~0); #define M(P) int main() { P return 0; } M(P) |
| A. | 1 |
| B. | -1 |
| C. | 2 |
| Answer» A. 1 | |
| 28. |
If an unsigned int is 2 bytes wide then, What will be the output of the program ? #include int main() { unsigned int m = 32; printf("%x n", ~m); return 0; } |
| A. | ffff |
| B. | 0000 |
| C. | ffdf |
| D. | ddfd |
| Answer» D. ddfd | |
| 29. |
In which numbering system can the binary number 1011011111000101 be easily converted to? |
| A. | Decimal system |
| B. | Hexadecimal system |
| C. | Octal system |
| D. | No need to convert |
| Answer» C. Octal system | |
| 30. |
Assunming, integer is 2 byte, What will be the output of the program? #include int main() { printf("%x n", -1>>1); return 0; } |
| A. | ffff |
| B. | 0fff |
| C. | 0000 |
| D. | fff0 |
| Answer» B. 0fff | |
| 31. |
What will be the output of the following C code? #include void main() { int x = 4; int *p = &x; int *k = p++; int r = p - k; printf("%d", r); } |
| A. | 4 |
| B. | 8 |
| C. | 1 |
| D. | Run time error |
| Answer» D. Run time error | |
| 32. |
Which of the following statements are correct about the program? #include char *fun(unsigned int num, int base); int main() { char *s; s=fun(128, 2); s=fun(128, 16); printf("%s n",s); return 0; } char *fun(unsigned int num, int base) { static char buff[33]; char *ptr = &buff[sizeof(buff)-1]; *ptr = ' 0'; do { *--ptr = "0123456789abcdef"[num ?se]; num /=base; }while(num!=0); return ptr; } |
| A. | It converts a number to a given base. |
| B. | It converts a number to its equivalent binary. |
| C. | It converts a number to its equivalent hexadecimal. |
| D. | It converts a number to its equivalent octal. |
| Answer» B. It converts a number to its equivalent binary. | |
| 33. |
Which of the following statements are correct about the program? #include int main() { unsigned int m[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; unsigned char n, i; scanf("%d", &n); for(i=0; i<=7; i++) { if(n & m[i]) printf("yes"); } return 0; } |
| A. | It will put OFF all bits that are ON in the number n |
| B. | It will test whether the individual bits of n are ON or OFF |
| C. | It will put ON all bits that are OFF in the number n |
| D. | It will report compilation errors in the if statement. |
| Answer» C. It will put ON all bits that are OFF in the number n | |
| 34. |
Which of the following statements are correct about the program? #include int main() { unsigned int num; int c=0; scanf("%u", #); for(;num;num>>=1) { if(num & 1) c++; } printf("%d", c); return 0; } |
| A. | It counts the number of bits that are ON (1) in the number num. |
| B. | It counts the number of bits that are OFF (0) in the number num. |
| C. | It sets all bits in the number num to 1 |
| D. | Error |
| Answer» B. It counts the number of bits that are OFF (0) in the number num. | |
| 35. |
What will be the output of the program ? #include int main() { int i=4, j=8; printf("%d, %d, %d n", i|j&j|i, i|j&&j|i, i^j); return 0; } |
| A. | 4, 8, 0 |
| B. | 1, 2, 1 |
| C. | 12, 1, 12 |
| D. | 0, 0, 0 |
| Answer» D. 0, 0, 0 | |
| 36. |
In the statement expression1 >> expression2. if expression1 is a signed integer with its leftmost bit set to 1 then on right shifting it the result of the statement will vary from computer to computer |
| A. | True |
| B. | False |
| Answer» B. False | |
| 37. |
Left shifting an unsigned int or char by 1 is always equivalent to multiplying it by 2. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 38. |
What will be the output of the program? #include int main() { printf("%d >> %d %d >> %d n", 4 >> 1, 8 >> 1); return 0; } |
| A. | 4 1 8 1 |
| B. | 4 >> 1 8 >> 1 |
| C. | 2 >> 4 Garbage value >> Garbage value |
| D. | 2 4 |
| Answer» D. 2 4 | |