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24.what is a void pointer? 25.why arithmetic operation can’t be performed on a void pointer? 26.differentiate between const char *a; char *const a; and char const *a; 27.compare array with pointer? 28.what is a NULL pointer? 29.what does ‘segmentation violation’ mean? 30.what does ‘Bus Error’ mean? 31.Define function pointers? 32.How do you initialize function pointers? Give an example? 33.where can function pointers be used?
2 1022234.what are bitwise shift operators? 35.what are bit fields? What is the use of bit fields in a structure declaration? 36.what is the size of an integer variable? 37.what are the files which are automatically opened when a c file is executed? 38.what is the little endian and big endian? 39.what is the use of fflush() function? 40.what is the difference between exit() and _exit() functions? 41.where does malloc() function get the memory? 42.what is the difference between malloc() and calloc() function? 43.what is the difference between postfix and prefix unary increment operators?
3 669644.what is the difference between strcpy() and memcpy() function? 45.what is output of the following statetment? 46.Printf(“%x”, -1<<4); ? 47.will the program compile? int i; scanf(“%d”,i); printf(“%d”,i); 48.write a string copy function routine? 49.swap two integer variables without using a third temporary variable? 50.how do you redirect stdout value from a program to a file? 51.write a program that finds the factorial of a number using recursion?
6 1224252.write a “Hello World” program in “c” without using a semicolon? 53.Give a method to count the number of ones in a 32 bit number? 54.write a program that print itself even if the source file is deleted? 55.Given an unsigned integer, find if the number is power of 2?
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25 62978Given an array A[n+m] of n+m numbers, where A[1] ... A[n] is sorted and A[n+1] ... A[n+m] is sorted. Design a linear time algorithm to obtain A[1...n+m] sorted using only O(1) extra space. Time Complexity of your algorithm should be O(n) and Space Complexity O(1).
2106How can I get Single byte from 'int' type variable? Can we alter single bit or multiple bits in int type variable? if so, How?
2 7717Can we access RAM? How? Whats the range of access? Similarly What are other hardware we can access?
1 4085Here is alphabets : abcdefgh 1) how to reverse. as hgfedcba 2) after reversal, how to group them in a pair hg fe dc ba.
2 7290
#include main() { enum _tag{ left=10, right, front=100, back}; printf("left is %d, right is %d, front is %d, back is %d",left,right,front,back); }
Why c is called top down?
How many keywords (reserve words) are in c?
What is hashing in c?
What are c header files?
What is the use of structure padding in c?
Can math operations be performed on a void pointer?
What is formal argument?
application areas a 'c' a) operating system b) graphics, interpreter, assembler c) program evalution, communication softwares d) all the above
Can we use visual studio for c?
What does malloc () calloc () realloc () free () do?
Is it valid to address one element beyond the end of an array?
pgm to find any error in linklist(in single linklist check whether any node points any of previous nodes instead of next node)
What is extern variable in c with example?
What does 4d mean in c?
