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- Question
How would you use qsort() function to sort an array of structures?
- Correct Answer
- #include "stringh" #include "stdlibh" struct stud { int rollno; int marks; char name[30]; }; int sort_m (struct stud *, struct stud *); int sort_name (struct stud *, struct stud *); int sort_marks (struct stud *, struct stud *); main() { static struct stud ss[] = { { 15, 96, "Akshay" }, { 2, 97, "Madhuri" }, { 8, 85, "Aishvarya" }, { 10, 80, "Sushmita" } }; int x,w; clrscr(); w = sizeof (struct stud); printf ('\nIn order of roll numbers:"); qsort (ss, 4, w, sort_rn); for(x=0; x<4;x++) printf ("\n%d%s%d", ss[x]rollno, ss[x]name,ss[x]marks); printf("\n\nIn order of names:"); qsort(ss, 4, sort_name); for (x=0; x<4;x++) printf("\n%d%s%d",ss[x]rollno, ss[x]name,ss[x]marks); printf("\n\nIn order of marks:"); qsort(ss,4,w,sort_marks); for (x=0;x<4;x++) printf ("\n%d%s%d",ss[x]rollno,ss[x]name,ss[x]marks); } int sort_rn (struct stud *t1, struct stud *t2) { return (t1->rollno-t2->rollno); } int sort_name (struct stud *t1, struct stud *t2) { return (strcmp(t1->name,t2->name)); } int sort_marks (struct stud *t1, struct stud *t2) { return (t2->marks-t1->marks); }
- 1. Which is the Stack used in 8085? Discuss
- 2. What does GUI stand for? Discuss
- 3. What is the main reason the OSI Model was created? Discuss
- 4. Ethernet uses which topology
Options- A. Star
- B. Bus
- C. Twisted pair
- D. Both B & C Discuss
- 5. What are various scheduling queues? Discuss
- 6. What is the state of the processor, when a process is waiting for some event to occur? Discuss
- 7. What is Memory-Management Unit (MMU)? Discuss
- 8. SNOBOL is mainly used for
Options- A. Text Operation
- B. String operations
- C. List operations
- D. Numerical operations Discuss
- 9. Convert the expression ((A + B) * C ? (D ? E) ^ (F + G)) to equivalent Prefix Notation Discuss
- 10. 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
More questions
Correct Answer: LIFO (Last In First Out) stack is used in 8085 in this type of Stack the last stored information can be retrieved first
Correct Answer: Graphical User Interface
Correct Answer: The OSI Model is used as a reference model The primary reason the OSI model was created was so that different networks could inter-operate Hence, different networks could communicate
Correct Answer: Bus
Explanation:
Ethernet uses Bus topology.
Correct Answer: Job queue Ready queue Device queue
Correct Answer: Waiting state
Correct Answer: Hardware device that maps virtual to physical address In MMU scheme, the value in the relocation register is added to every address generated by a user process at the time it is sent to memory ->The user program deals with logical addresses; it never sees the real physical addresses
Correct Answer: String operations
Explanation:
SNOBOL is a high-level computer programming language used especially in manipulating textual data. It is mainly used for string operations and was developed between 1962 and 1967.
Correct Answer: Prefix Notation: ^ - * +ABC - DE + FG
Correct Answer: 11 2 1 1
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