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- Question
Point out the error in the program.
#include<stdio.h> #include<stdlib.h> union employee { char name[15]; int age; float salary; }; const union employee e1; int main() { strcpy(e1.name, "K"); printf("%s", e1.name); e1.age=85; printf("%d", e1.age); printf("%f", e1.salary); return 0; }
Options- A. Error: RValue required
- B. Error: cannot modify const object
- C. Error: LValue required in strcpy
- D. No error
- Correct Answer
- Error: cannot modify const object
- 1. Can we pass a variable argument list to a function at run-time?
Options- A. Yes
- B. No Discuss
- 2. Which statement will you add in the following program to work it correctly?
#include<stdio.h> int main() { printf("%f\n", log(36.0)); return 0; }
Options- A. #include<conio.h>
- B. #include<math.h>
- C. #include<stdlib.h>
- D. #include<dos.h> Discuss
- 3. The macro va_start is used to initialise a pointer to the beginning of the list of fixed arguments.
Options- A. True
- B. False Discuss
- 4. What will be the output of the program (16-bit platform)?
#include<stdio.h> #include<stdlib.h> int main() { int *p; p = (int *)malloc(20); printf("%d\n", sizeof(p)); free(p); return 0; }
Options- A. 4
- B. 2
- C. 8
- D. Garbage value Discuss
- 5. Bitwise & can be used in conjunction with ~ operator to turn off 1 or more bits in a number.
Options- A. Yes
- B. No Discuss
- 6. Which of the following correctly shows the hierarchy of arithmetic operations in C?
Options- A. / + * -
- B. * - / +
- C. + - / *
- D. / * + - Discuss
- B - Brackets first
- O - Orders (ie Powers and Square Roots, etc.)
- DM - Division and Multiplication (left-to-right)
- AS - Addition and Subtraction (left-to-right)
- 7. Which of the following statements correctly declare a function that receives a pointer to pointer to a pointer to a float and returns a pointer to a pointer to a pointer to a pointer to a float?
Options- A. float **fun(float***);
- B. float *fun(float**);
- C. float fun(float***);
- D. float ****fun(float***); Discuss
- 8. The elements of union are always accessed using & operator
Options- A. Yes
- B. No Discuss
- 9. How will you print \n on the screen?
Options- A. printf("\n");
- B. echo "\\n";
- C. printf('\n');
- D. printf("\\n"); Discuss
- 10. Macros have a local scope.
Options- A. True
- B. False Discuss
More questions
Correct Answer: No
Explanation:
Every actual argument list must be known at compile time. In that sense it is not truly a variable argument list.
Correct Answer: #include<math.h>
Explanation:
math.h is a header file in the standard library of C programming language designed for basic mathematical operations.
Declaration syntax: double log(double);
Correct Answer: False
Correct Answer: 2
Correct Answer: Yes
Correct Answer: / * + -
Explanation:
Simply called as BODMAS (Bracket of Division, Multiplication, Addition and Subtraction).
How Do I Remember ? BODMAS !
Correct Answer: float ****fun(float***);
Correct Answer: No
Correct Answer: printf("\\n");
Explanation:
The statement printf("\\n"); prints '\n' on the screen.
Correct Answer: False
Explanation:
False, The scope of macros is globals and functions. Also the scope of macros is only from the point of definition to the end of the file.
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