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- Question
What value does read() return when it has reached the end of a file?
Options- A. 1
- B. -1
- C. 0
- D. None
- Correct Answer
- -1
ExplanationIt returns -1
- 1. Convert the expression ((A + B) * C ? (D ? E) ^ (F + G)) to equivalent Prefix Notation Discuss
- 2. public abstract interface Frobnicate { public void twiddle(String s); } Which is a correct class?
Options- A. public abstract class Frob implements Frobnicate { public abstract void twiddle(String s) { } }
- B. public abstract class Frob implements Frobnicate { }
- C. public class Frob extends Frobnicate { public void twiddle(Integer i) { } }
- D. public class Frob implements Frobnicate { public void twiddle(Integer i) { } } Discuss
- 3. Macro flowchart is also called as
Options- A. Less Detail flowchart
- B. More detail flowchart
- C. Simple detailed flowchart
- D. None of the above Discuss
- 4. How many times the following program would print 'Jamboree'? main() { printf ( "\nJamboree"); main (); } Discuss
- 5. Rewrite the following set of statements using conditional operators. int a =1, b ; if ( a > 10 ) b = 20; Discuss
- 6. What will be output of following program? #include
int main() { void (*p)(); int (*q)(); int (*r)(); p = clrscr; q = getch; r = puts; (*p)(); (*r)("www.curioustab.com"); (*q)(); return 0; }
Options- A. NULL
- B. www.curioustab.com
- C. Compilation error
- D. None of above Discuss
- 7. What would be the output of the following program? main() { char a[] = "Visual C++"; char *b = "Visual C++"; printf ("\n%d %d", sizeof (a), sizeof (b)); printf ("\n%d %d", sizeof (*a), sizeof (*b)); } Discuss
- 8. How would you find the length of each string in the following Program? main() { char *str[] = { "Frogs", "Do", "Not" , "Die" , "They" , "Croak!"}; printf ("%d%d", sizeof (str), sizeof (str[0])); } Discuss
- 9. Point out the error, if any, in the following program. #include "stdio.h" main() { unsigned char; FILE *fp; fp = fopen ("trail", "r"); while (( ch = getc (fp)) ! = EOF) printf ("%c", ch); fclose (fp); } Discuss
- 10. Point out the error, if any, in the following program. #include "stdarg.h" main() { display ( 4, 12.5, 13.5, 14.5, 44.3); } display(int num, ...) { float c; int j; va_list ptr; va_start (ptr, num); for ( j = 1; j <= num; j++) { c = va_arg ( ptr, float ); printf ("\n%f", c); } } Discuss
Programming problems
Search Results
Correct Answer: Prefix Notation: ^ - * +ABC - DE + FG
Correct Answer: public abstract class Frob implements Frobnicate { }
Explanation:
B is correct, an abstract class need not implement any or all of an interface?s methods
Correct Answer: Less Detail flowchart
Explanation:
A flowchart is a type of diagram that represents a workflow or process. A flowchart can also be defined as a diagrammatic representation of an algorithm, a step-by-step approach to solving a task.
Macro flowchart shows the outlines the main segments of program. Macro flowchart is also called as less detail flowchart.
Correct Answer: Till the stack doesn't overflow
Correct Answer: int a = 1, b , dummy; a > 10 ? b = 20 : dummy =1; Note that the following would not have worked: a > 10 ? b = 20 : ;;
Correct Answer: www.curioustab.com
Explanation:
p is pointer to function whose parameter is void and return type is also void. r and q is pointer to function whose parameter is void and return type is int . So they can hold the address of such function.
Correct Answer: 11 2 1 1
Correct Answer: main() { char *str[] = { "Frogs", "Do", "Not", "Die" , "They", "Croak!" }; int i; for ( i = 0;i<=5;i++) printf ("\n%s%d", str[i], strlen( str[i])); }
Correct Answer: EOF has been defined as #define EOF -1 n the file "stdioh" and an unsigned char ranges from 0 to 255 hence when EOF is read from the file it cannot be accommodated in ch Solution is to declare ch as an int
Correct Answer: While extracting a float argument using va_arg we should have useed c = va_arg (ptr, double)
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