Programming problems
- 1. How many times i value is checked in the below code? #include
int main() { int i = 0; do { i++; printf( "In while loopn" ); } while (i < 3); }
Options- A. 2
- B. 3
- C. 4
- D. 1 Discuss
Correct Answer: 3
- 2. void main() { char good *better, *best; printf( "%d..%d", sizeof(better), sizeof(best) ); }
Options- A. 1..2
- B. 4..4
- C. 4..2
- D. 2..2 Discuss
Correct Answer: 4..2
Explanation:
The second pointer is of char type and not a good pointer.
- 3. Output of the Program : main() { int i = 1; while (i <= 5) { printf( "%d", i ); if (i > 2) goto here; i++; } } fun() { here : printf( "PP" ); }
Options- A. 1
- B. 2
- C. Compilation error
- D. Exception occurs Discuss
Correct Answer: Compilation error
Explanation:
Compiler error: Undefined label 'here' in function main
- 4. Which Of The Following Statements Is Most Accurate For The Declaration X = Circle()?
Options- A. x contains a reference to a Circle object
- B. You can assign an int value to x
- C. x contains an object of the Circle type
- D. x contains an int value Also asked in: Database Administrator, IT Trainer, Project Manager, Software Architect
Correct Answer: x contains a reference to a Circle object
- 5. What is the output of this C code? #include
void main() { int y = 3; int x = 5 % 2 * 3 / 2; printf("Value of x is %d", x); }
Options- A. Value of x is 1
- B. Value of x is 2
- C. Value of x is 3
- D. Compile time error Discuss
Correct Answer: Value of x is 1
- 6. What is the output of this C code? #include
void main() { int x = 1, z = 3; int y = x << 3; printf( "%dn", y ); }
Options- A. -2147483648
- B. -1
- C. Run time error
- D. 8 Discuss
Correct Answer: 8
- 7. What would be the output of the following program ? main() { const int x = 5; int *ptrx; ptrx = &x; *ptr = 10; printf ("%d", x); }
Options- A. 5
- B. 10
- C. Error
- D. Garbage value Discuss
Correct Answer: 10
- 8. Point out the error in the following program. main() { char mybuf[] = "Zanzibar" ; char yourbuf[] = " Zienckewiz"; char * const ptr = mybuf; *ptr = 'a'; ptr = yourbuf; } Discuss
Correct Answer: ptr pointer is constant In ptr = yourbuf the program is trying to modify it, hence an error
- 9. What do the functions atoi(), itoa() and gcvt () do? Show how would you use them in a program. Discuss
Correct Answer: atoi() Converts a string to an integer itoa() Convert an integer to a string gcvt() Converts a floating-point number to a string #include "stdlibh" main() { char s[] = "12345"; char buffer [15], string[20]; int i; i = atoi (s); printf("\n%d",i); gcvt (20141672, 4, buffer); printf ("\n%s", buffer); itoa(15, string,2); printf ("\n%s", string); }
- 10. What's the difference between the functions rand(), random(), srand() and randomize()? Discuss
Correct Answer: rand() returns a random number random() returns a random number in a specified range srand() initialise a random number generator with a given seed value randomize() initializes a random number generator with a random value based o time
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